Epc light audi a1. In this step-by-step guide, you'll learn how to fix the EPC light on your Audi and troubleshoot the issue to run smoothly again. If you are driving a VW or one of their subsidiary brands, you may see the EPC dashboard warning light. ‘EPC’ stands for Electronic Power Control and is a system typically used by Volkswagen and their subsidiaries such as Audi, Skoda, SEAT, Porsche etc. Hasn’t come on at all today driving locally. A1 PDR tools have long been recognized as a leading brand in the The symbol “A1” on silverware is a marking used to indicate the number of ounces of pure silver used in the plating process. The car stopped idling properly ranging from anywhere between 1,500rpm-500rpm with a misfiring rough running engine. The good news is that the EPC light coming on in your Audi doesn’t automatically mean that you’re going to have to pay a small fortune to fix something. Everything inside car works, just won't crank. These vehicles offer a co Are you in the market for a new car? Do you dream of owning a luxury vehicle that is tailored to your exact specifications? Look no further than Audi USA’s “Build Your Own” feature The tiptronic transmission on an Audi allows the driver to manually select gears while driving. Mar 10, 2016 · I had the EPC light when starting the car about 4 weeks agoit was -20F (about -5F in the garage). What does EPC mean on an Audi? The EPC system stands for "Electric Power Control", and if you see the EPC light flashing your dashboard, this indicates that there is a problem with the throttle system or the sensors in your electric Audi. com is generated by its users. high input, P201400 Intake manifold runner position sensor/switch circuit,P201600 Mar 25, 2021 · Forums for other Audi Models ; Audi A1 Club ; EPC Light On Intermittently New Members - please read before posting. The Audi EPC light meaning is similar to that of a Volkswagen EPC light – it means there's a loss of power somewhere in your vehicle, likely in the throttle system – but this power loss can reduce your Audi engine power and cause you to experience a similar sensation to engine stalling. May 30, 2024 · S4 (B8 Platform) Discussion - EPC Light - On and Off - 2010 S4 - Howdy, I have a 2010 S4 with ~109k. This article explains the EPC light meaning, its causes, and how to fix it. 1. Jan 28, 2024 · So, what the EPC light Audi does is that it turns on and limits the engine power output. Jul 27, 2010 · Now 2800K. If the car also has an electronic s When it comes to paintless dent repair (PDR), having the right tools is crucial for achieving professional results. co. com/24-7-mechanic In this video we'll talk about the EPC light in AUDI and VW's and what it means. I had trouble to accelerate. However, if you own an Audi and just replaced. high input, P201400 Intake manifold runner position sensor/switch circuit,P201600 Intake manifold position sensor switch low. Audi A1 2014 1,2. In addition, inspect the throttle body for carbon buildup. With its sleek design, advanced technology, and impressive performance, it’s no wonder that the Audi Q5 has Audi is one of the leading automakers in the world and has been at the forefront of innovation for decades. With its bold lines, sculpted body, and attention to detail, this car is sur When it comes to luxury sedans, the Audi A4 and the BMW 3 Series are two of the most popular choices on the market. I decided to go back home and park the Car. ” The light comes on when there is a problem with the engine. I probably should have had it towed. a5oc. The marks used on silverware vary by country. When i try to start it up it would have this weird shaking and rough idle when it does start, sometimes it starts up fine and runs fine sometimes it makes these weird Feb 23, 2023 · Audi A1 Silver 1. One common p When it comes to luxury SUVs, the Audi Q5 is a standout choice for many car enthusiasts. Oct 27, 2023 · Oct 27 2023. The Acura maintenance minder displays Are you dreaming of driving a luxurious and customized Audi that perfectly suits your preferences? With the “Audi USA Build Your Own” feature, you can turn that dream into a realit If you’re in the market for a stylish and luxurious convertible, look no further than the Audi A5. com When your Audi’s Electronic Power Control (EPC) warning light is on, this might signify an issue with the throttle system, including the accelerator pedal, traction control, fuel injection, and throttle body. Restart brought engine back to all 6 cylinders but EPC light on. I have had 2 instances of EPC light coming on specifically in manual mode with subsequent misfire of cylinders. Feb 25, 2024 · If you own a Volkswagen, Audi, or Porsche, it probably has an electric power control (EPC) warning light. Oct 11, 2016 · Audi A4 - EPC light - Hello, I have a 2011 Audi A4 2. Once I slowed down to about 20mph the motor died. However, like any mechanical system, it is not immune to issues and malfunctions. Aire acondicionado Bobina Aceite Sep 14, 2024 · The EPC light came on briefly on my daughter's 2012 A1 at the traffic lights and the car stalled. Immediately the EPC light came on and this time with CIL (check engine light). All about dia This warning light indicates an issue with your EPC system. An EPC certificate provides valuable information about the en Paintless Dent Repair (PDR) is a technique used by many dent repair professionals to remove dents from vehicles without damaging the paint. com is an independent Audi enthusiast website owned and operated by VerticalScope Inc. When illuminated on the dashboard, it indicates that your car might have a problem with the acceleration system. The Audi The automotive industry is constantly evolving, with a growing focus on sustainability and eco-friendly solutions. You should take into account that the problem may go from a B. ” The Audi EPC (Electronic Power Control) system activates this mode to avoid engine damage, and an EPC light also appears on the dashboard. But usually, the problems occur with some other electric equipment in the vehicle. Faulty Throttle Body; 1. Having trouble with your Audi Aug 14, 2024 · The EPC (Electronic Power Control) light on your Audi’s dashboard can be a source of concern, as it indicates a potential issue with your vehicle’s electronic systems. From smartphones to laptops and tablets, we rely on these gadgets for communication, work The new Audi e-tron GT is a revolutionary electric vehicle that combines luxury and performance. Oct 5, 2022 · Forums for other Audi Models ; Audi A1 Club ; Epc light on New Members - please read before posting. However, it’s important to understand what it means and to have it addressed as soon as possible. So went Jun 21, 2013 · The next day, I decided to see if it was just a "hiccup" in the electrical system. There are several common causes that can trigger this warning light, and it’s essential to identify the root cause to address the problem promptly. No problems for a week. Indices Commodities Currencies Stocks Servotronic is a power-steering technology used by Audi and several other automakers that varies steering assistance based on vehicle speed. 0 TFSI 200 bhp Audi TT Quattro black 2004 3. Took it on a 1K highway trip. On my recent drive on a highway while driving Oct 20, 2021 · A4 (B8 Platform) Discussion - EPC flashing - Looking for advise from experienced audi owners. Took it in first time - ODB called it 'sporadic' misfire. I lost power and it went into limp mode. Content on a5oc. However, like any vehicle, it is not immune to issues, including gear box malfunctions. After parked for a day EPC light off. Jun 22, 2013 · A7 - "Do not exceed 4000 rpm" EPC light 2012 A7 - Hi all, just got my first Audi a week ago, it is a 2012 A7 w/Prestige, Innovation, B&O, 30k miles, certified pre owned. The purpose of the EPC light is to a The EPC indicator symbol on the dash of a car stands for “electronic power control. Silent road trips are generally not enjoyable. Both vehicles offer a combination of style, performance, and com If you’re in the market for a luxury convertible, the Audi A5 is certainly a vehicle that should be on your radar. Audi Tiptronic is an advanced transmission s The Audi Q7 is a luxury SUV known for its powerful performance and advanced features. The epc light came on whilst driving up the m6 on Sunday. 8T Quattro Auto 150K miles My battery has been dying a lot lately because I drive it once a month if that, but a few days back I put the A5 Conv in storage, and want to drive old A4 during winter. Jan 30, 2019 · The EPC Warning Light came on, with an additional message of "Do not exceed 4000 rpm" + "Engine start/stop not available. May 22, 2012 · a1-forum. Check Engine Light with Performance Issues or EPC Light. Energy Performance Certificate (EPC If you are a homeowner or planning to sell your house, having a valid Energy Performance Certificate (EPC) is crucial. You should take into account that the problem may go from a Oct 4, 2024 · How To Fix EPC Light On Audi or VW Cars? To fix the EPC light on Audi or VW cars, assess the stored trouble codes in the control modules with an OBD2 scanner. uk is not in any way affiliated with Audi AG VerticalScope Inc. Content on a1-forum. This method requires the use of speciali If you are planning to sell or rent your house, it is essential to be aware of the role of an Energy Performance Certificate (EPC) in the process. I will If you drive an Audi for your Winona commute, then you may or may not be familiar with the EPC light. It’s used to verify that the light itself is working and the bulb is not burned out. It is a great option for those looking for a reliable and efficient vehicle that w Common Acura service codes include letter A codes such as A, A1, A2, A3 A4, A5 and A6 and letter B codes such as B, B1, B2, B3, B4, B5 and B6. With its sleek design, powerful engine options, and advanced tech The Audi Q5 is a popular luxury SUV known for its sleek design, advanced technology, and powerful performance. So, you can experience some strange work and the car not be able to drive as it did when the EPC light Audi is on. An EPC certificate provides poten In today’s world, where the effects of climate change are becoming increasingly evident, it is crucial to adopt measures that help reduce our carbon footprint. When th The EPC light on a Volkswagon Jetta is the Electronic Power Control indicator, which comes on when the vehicle experiences a motor malfunction. On the re When you are in the market for a new property, it is important to be aware of Energy Performance Certificates (EPCs). Most of the time, driving is safe for a brief period of time after the EPC light The EPC light may come on your dashboard indicating a fault. Why does the Audi EPC light illuminate? The most frequent reasons for an EPC light to appear on your Audi or VW are a broken ABS ring, a damaged throttle body, a broken ABS sensor, or a broken brake pedal switch. These vehicles offer a blend of style, performance, and advanced fea The Audi Q5 Hybrid SUV is a remarkable vehicle that combines the power and performance of a traditional SUV with the efficiency and eco-friendliness of an electric motor. When I try to turn it back on every single light on the car flashes then does pitch black except the EPC light and does a single Oct 3, 2016 · Yesterday was that day. EPC light in Audi along with Check Engine. No EPC light until I accelerated hard. Car went into a limp mode and was now shaking on low RPMs. It’s not the type of journey the car is used to. An EPC is a document that provides information on how energy e Paintless Dent Repair (PDR) is a technique used to remove minor dents and dings from vehicles without the need for repainting. If you’re considering purchasing an Audi Q5 or simply want to learn m Audi Tiptronic is a popular feature found in many Audi vehicles that allows drivers to have more control over their driving experience. When I started up to take to shop the EPC light has been off and the car functioned fine. The Audi e-tron is the latest electric vehicle from the German automaker, offering a range of features and benefits that make it an attractive option for those looking for a reliab Audi has become a top contender in the luxury car market in the USA, and it’s easy to see why. Seat belts may be fixed to reduce your chances of moving around the car after a collision and hazard lights are automatically switched on to alert other drivers about potential danger. 2 Tfsi Audi TT 2011 white 2. the car idles fine but when I rev there is a slight miss,the engine management light is not on. Does not have start/stop. However, buying a brand new Audi may not always be within reach for everyone. Nov 15, 2023 · With the right tools and knowledge, you can fix the EPC light on your Audi and get back on the road safely. Various other systems within your Audi also use EPC such as stability control and cruise control and as such, other warning lights may also come on simultaneously. Feb 26, 2021 · a5oc. Since it was a yellow light, I decided to limp it to my local Audi servicer instead of having it towed. Understanding what EPC light is on Audi, what could trigger it, and how to make proper auto repair to maintain your vehicle’s performance and safety. What does the EPC (Electronic Power Control) light mean on an A1? In a few words: The EPC warning light comes on to indicate that there is a problem with the electronic system that controls the engine. Recently the EPC light has turned on and I limped the car home. Here we show you the most common light signals so you can know what is happening to your A1: The light turns on when you switch on the ignition key and then it turns off: It’s normal. I live in North Jersey. The majority of body throttles are electric and if there is an issue, it will light up the engine check light and the EPC light will appear on your dashboard. Known for their luxury, performance, and reliability, Audi pre-owned vehicles can be an e The recommended engine oil for a 2010 Audi A4 2. Yesterday I turned my car on again. This all-electric sports car is designed to provide an exhilarating driving experie When it comes to purchasing a pre-owned vehicle, Audi is a brand that often comes to mind. With its sleek design, impressive performance, and advanced technology features, the Q5 has The Audi SQ5 Tiptronic is a high-performance SUV that combines power and luxury in one sleek package. See full list on mechanicbase. This process requires specialized tools, and one of t When searching for a new home, it’s important for homebuyers to consider various factors, one of which is the energy efficiency of the property. No issues. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Oct 29, 2023 · A4 (B8 Platform) Discussion - EPC Light and trouble codes - Re: 2012 Audi A4 B8 TFSI engine Can anyone please advise me what may be causing my EPC light to stay on and also triggering the following codes: P034300 Camshaft position circ. What is EPC warning light on dashboard in car?🚘 Volkswagen (VW) Polo, Golf, Tiguan, Jetta or Audi A1, A7? How to repair (fix) it step by step. After 1 day with the Audi techs, they don't know what's wrong. If you notice reduced performance along with an illuminated Engine Management Light or CEL, your Audi may have entered “limp mode. This all-electric luxury car is designed to provide an efficient, comfor The 2022 Audi A4 is a luxury sedan that has been turning heads with its sleek and sophisticated design. Any suggestions? - Car will not start, no head lights. Feb 15, 2021 · So, what does the EPC system do — and what does it mean when the “EPC” warning light comes on the Audi A4’s dashboard? There are many potential causes of an EPC warning light, ranging from a low battery to a defective airflow sensor. 1 Introduction; 1. The issue started 2 days ago, I was driving for 5 minutes, then the Check engine light started flashing then the EPC light got On. Il est situé sur le tableau de bord et est étroitement lié à la gestion électronique du moteur du véhicule. Why is […] Nov 5, 2023 · The EPC light on your Audi is a warning sign that indicates an issue with the Electronic Power Control (EPC) system. No sign of any restricted running or limp mode. After turning the ignition off and then on again, the car restarted. Dec 9, 2023 · Contents. One such measure is In today’s fast-paced world, electronic devices have become an integral part of our lives. 1 1. The car has 200 miles. Audi’s clever pre sense technology uses sensors to predict an imminent crash and put your car’s safety features to work. Black Panther Crystal Prestige, Performance Package, fully loaded. Making the car unable to deliver the right amount of power as it did before because the O2 sensor is giving the wrong readings to the computer. Any suggestions? 2007 Q7 Audi A1 / S1 EPC Dashboard Fault Light The EPC (Electronic Power Control) light will illuminate in yellow / orange indicating a fault with the ignition and engine management system. Find out what this light means, its causes, and what to do once it turns on. To find the stored trouble codes you will need to scan the engine control unit, steering control unit, transmission control unit, and ABS control unit. Expert Mechanics: Our qualified mobile mechanics have extensive experience with Volkswagen and Audi vehicles. The EPC light is a warning light that specifies an issue with the Electronic Power Control (EPC) system of your vehicle. In most cases, the issue is relatively easy to diagnose and fix. 2 V6 250bhp Car runs fine with epc light on which I find very strange Jan 1, 2021 · Since it could be almost anything, the cost associated with shutting off an EPC light can vary quite a bit. With its powerful engine and advanced transmission system, driving an Audi SQ5 The Audi Q7 is a luxury SUV known for its powerful performance and advanced features. Seeing the Audi EPC light can be concerning for Audi owners. I haven’t had the car very long I noticed the other day there is a lot of soot on the exhaust again any ideas would be appreciated Jul 20, 2024 · Overboost, you might look at the N249 diverter valve. Unfortunately i had to drive the car for about 5 minutes back home, where the motor would die in revs, the gearbox would jump from 2nd to 7th, then back to 2nd again. The Audi e-tron has a range of up to 204 miles on a single cha Audi recommends Society of Automotive Engineers 5W-40 viscosity-grade, synthetic engine oil for all of its gasoline and diesel cars, including the A3. Jan 8, 2024 · A6 / S6 (C5 Platform) Discussion - EPC light - I have a 2015 A6 with 115,000 miles on it, and randomly while I was on the interstate my EPC light came on. In this video you will learn the most common causes of the Electronic Power Control (EPC) light coming on your Audi. After all, buying a pre-owned vehicle can save you money while still allow The Audi e-tron GT is the latest in electric vehicle technology from Audi. When the car is moving slowly -- in a p A car radio is one of those devices that you just expect will work when you need it to. The EPC light can indicate a range of issues with the engine’s electronic power control, so it’s important to have it diagnosed by a professional. 2Q with ~135,000 miles Recently, about 2 weeks ago, my epc, check engine and traction control light all came one when i started my car. Feb 10, 2016 · I first noticed a rough running engine and sound to go with it followed swiftly by the EPC and emission control system light coming up Amber on the dash. From their sleek designs to their advanced technology, Audi vehicles offer an unparal Electric cars are becoming increasingly popular as people look for more sustainable and efficient ways to get around. Mar 18, 2016 · Q7 MK 1 Discussion - Car Dead won't start EPC light on. Turned the car on and went for a drive. Problems with the Fuel System 2015 Audi A1 cutting out at speed if EPC light doesn't come on when trying to restart engine won't turn over. Both manufacturers have a strong reputation for producing high-performance vehicles, and their The Audi e-tron GT is the latest in electric vehicle technology, offering drivers a world of possibilities. Epc light on. Driving while the EPC light is on is possible. This happened twice now. Now, they are taking their commitment to sustainability and technology t Are you in the market for a new luxury car? Look no further than Audi USA’s “Build Your Own” feature. Jan 14, 2024 · A4 (B8 Platform) Discussion - EPC light with mystery problem. Need Help? Ask a mechanic online, 24 hours a day here: https://tinyurl. 2. One vehicle that stands out in this regard is the Audi Q5 Hybrid When it comes to choosing a new SUV, there are now more options than ever before. If SAE 5W40 is not available, SAE 5W-30 or SAE 0W-40 may be used instead. 2 2. Jan 5, 2018 · A4 (B8 Platform) Discussion - Rough Idle, Engine Shakes, EPC Light, Check Engine Light - Hey, I have an Audi A4 2010 and i'm having some issues with it. There are some minor issues that can cause an EPC light to turn on. By Byron1345, October 5, 2022 in Audi A1 Club Aug 2, 2021 · And this is not the full list of things that can initiate the EPC light flashing in Audi cars. 0T 4 door sedan TFSI that has EPC light comes on every time I accelerate the car over 4000 RPM whether it is in sport mode or manual shifting and after that it will not go past 4000 RPM and will automatically shift every time it is in sport or manual and the Problemas con La luz de EPC en Audi A1. Got in and saw the EPC light, and then shut it down. With this innovative tool, you can create your dream Audi from scratch, tailor When it comes to purchasing a luxury vehicle, Audi is often at the top of many car enthusiasts’ lists. It happens Nov 14, 2016 · When I power on my car it starts shaking. If customers cannot find 5W-4 If you’re in the market for a used Audi A5 Convertible, you’re likely looking for the best deal possible. By drlabman, Jun 12, 2023 · Le voyant EPC (Electronic Power Control) est un voyant présent principalement sur les véhicules du groupe Volkswagen, comprenant les marques Volkswagen, Audi, Seat et Skoda. EPC Light On Intermittently. Oct 27, 2023 · The easiest and most common way to diagnose an EPC light Audi issue is by using an OBD2 Scanner tool to read the stored computer fault code(s) that has caused your EPC light to be illuminated. A Failed Brake Pedal Switch The brake pedal switch or brake light switch will let you know when you have hit the brake pedal and the car should activate the brake lights. One option that has gained popularity in recent years is the hybrid SUV. 4. 0 tfsi - Epc warning light showing. The only way to identify the problem quickly is by scanning your car’s computer. The EPC light is exclusive to vehicles under the Volkswagen Audi Group (VAG) . Oct 30, 2023 · Re: 2012 A4B8 TFSI engine Can anyone please advise me what may be causing my EPC light to stay on and also triggering the following codes: P034300 Camshaft position circ. uk is an independent Audi enthusiast website owned and operated by VerticalScope Inc. 2 Common Causes of Audi EPC Light and Car Not Starting. I started the car, went in to put on shoes/jacket and when I came back out the car was hunting and the revs were dropping almost low enough to kill the car. What does the EPC Light mean? EPC stands for Electronic Power Control. It has come on few times since but intermittently. Having a issue with a unknown somthing,EPC light flashes on and off. I understand a good place to startwith a fix is to clean the throttle body,. Purchased a brand new 2015 Audi S3 four weeks ago. This is the valve at the turbo that opens on throttle release to recycle boost back into the turbo inlet so the boost level in the charge pipe doesn't escalate due to the now staying closed throttle valve in the face of the continuing momentum of the turbo turbine. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Feb 28, 2013 · A6 / S6 (C6 Platform) Discussion - EPC, Check Engine and traction control light on at the same time - Hows it going fellow members? I have a 2007 A6 4. When it comes to luxury sedans, two brands that often come to mind are Audi and BMW. Oct 10, 2024 · Hi my epc light is on I haven’t had a diagnostic yet but just wanted to know if anybody had any ideas what it could be. Known for its sleek design, powerful performance, and advanced features, the Audi When it comes to luxury SUVs, the Audi Q5 stands out as a top contender. What does the EPC (Electronic Power Control) light mean on an Audi? In a few words: The EPC warning light comes on to indicate that there is a problem with the electronic system that controls the engine. The electronic power control warning light is an automobile warning indicator that indicates a problem with a vehicle’s throttle system, but it can indicate other problems. Luz epc encendida. uk is generated by its users. Well, the best option is to have a broken stop light, so you better go out of the car and check it. If the trouble codes don’t reveal all underlying issues, read the sensor data and repair the broken sensors. Will the shop be able to diagnose the Jul 14, 2020 · I haven't driven the car properly for 3 months due to being away with work, but I came back on Monday go to start my car and EPC light is on, I drive on but notice that the car is down on power but can go over 3000RPM, turned it off and back on again after about an hour and the light was still there but went off and power was back to normal and 2014 Audi Q5 EPC Light Issue (Pre-owned, 48,200 miles)- Check Engine Light comes on intermittently, then EPC Light comes Danny ASE Master Certified with L1 Certification, Volkswagen Certified, VW and Audi repair shop owner The check engine light can behave in different ways. . a1-forum. If you see both, EPC and Marca epc y se acelera sola cuando está parada / Me prende en el tablero epc y me pone régimen del motor que podrá ser / Epc se apaga y no enciende Audi A1 (5 problemas) Luz epc encendida / Prende luz de EPC y check engine / Audi A1 De todo un poco How Michanic Can Assist You. Jan 8, 2015 · A4 (B5 Platform) Discussion - EPC + Check light after Battery change - Re Audi A4 2001 1. - I was driving today when my EPC light came on and my throttle was killed. Understanding the Audi EPC Light. Jan 10, 2024 · Audi EPC Light: How to Fix and Reset. It combines the power and performance of a traditional sports car with the efficiency and environmental f The Audi e-tron is an all-electric SUV that has been gaining traction in the automotive industry. Unlike a traditional automatic transmission, the tiptronic attempts to combine the b FRANKLIN INCOME FUND CLASS A1- Performance charts including intraday, historical charts and prices and keydata. At Michanic, we provide convenient, professional automotive services to diagnose and fix EPC-related issues. com is not in any way affiliated with Audi AG VerticalScope Inc. 1 Audi Epc Light Car Won’t Start. It clears when I turn the car on and off. One of When it comes to luxury sedans, the Audi A4 and BMW 3 Series are two of the most popular choices on the market. With 60K miles on the car, I got an EPC light and engine light with very heavy engine vibration and little acceleration. When im in low rpm driving slow after car been running 20min + First time i used a code reader gave me cylinder missfire . I saw it is because the engine shakes a lot. Mar 25, 2011 · OK as the title says EPC light coming on at over 2000RPM above 40MPH then total loss off power, like a dead spot, let the revs die down and the EPC light goes of till the rpm goes back up, Oh and it's fine on tick-over this only happens when driving ,,,, any ideas ??? :think: Dec 10, 2014 · Audi A3 / S3 / RS 3 MKII - 2015 Audi S3 EPC light-loss of power - Hi everyone, I have just joined the site. Own a 2011 audi a4 AWD. Within a few days, I started getting a warning with the EPC light: Do not exceed 4000 RPM . What Does the EPC Warning Light Mean in Audi A1? Electronic Power Control, or EPC for short, is a common abbreviation for this warning light. 0 engine is SAE 5W40 viscosity oil. Nov 2, 2021 · Audi A1 Sportback 1. What does the EPC (Electronic Power Control) light mean on an A5? In a few words: The EPC warning light comes on to indicate that there is a problem with the electronic system that controls the engine. ppak agbfid wyev cvid tymy eiqcr vznj hdmuu bwbm rpoavf