P0100 is a generic OBD2 trouble code that indicates an issue with your Audi A4’s Mass Air Flow (MAF) Sensor. This code is usually caused by a MAF sensor that is faulty, dirty or a wiring issue related to it. It may be tempting to replace your A4’s MAF sensor without checking the electrical system … Read more
If your Audi A4 has washer fluid that is not coming out, it is caused by a few common issues. This article aims to give quick practical advice to help you get your wiper/washer pumping fast. Audi A4 Washer Pump Not Working Quick Diagnosis Table Did You Hear the Washer Motor? Causes Yes No Fluid, … Read more
A mysterious noise you don’t know the source of is one of the most stressful things that can happen during vehicle ownership. If your Audi A4 is making a sloshing sound while driving it, this is the guide for you. If your A4 makes a sound like sloshing water while driving, this is undoubtedly a … Read more
Does your Audi A4’s air conditioning smell bad? This article will provide you with some quick and comprehensive list of causes to help eliminate your car’s foul odor. This guide is broken down into three sections: AC Smell Reference Table Smell Type Potential Causes Sweet Leaking Engine Coolant, Leaking Refrigerant Mold, Mildew, Fungus Clogged Drain … Read more
P0020 is a rarely seen OBD II trouble code that can affect the Audi A4. It’s a variable valve timing (VVT) related code, indicating a wiring issue with the bank 2 camshaft actuator “A.” P0020 is often by low or sludgy oil. Check your A4’s oil as soon as possible. P0020 is a generic code, … Read more
P0001 is a rarely seen OBD II error code. It indicates an issue with your Audi A4’s Fuel Volume Regulator (FVR) Control System. P0001 is usually caused by a wiring problem or issue with the fuel volume regulator. The most difficult issue with diagnosing the fuel system is getting to the parts. P0001 is a … Read more
P0200 is a common OBD II error code that can occur in the Audi A4. It indicates an issue with your car’s fuel injection system. Specifically, the fuel injector circuit is out of range (in terms of voltage). Audi A4 P0200: Quick Info Definition P0200: Injector Circuit Malfunction Frequent Symptoms Check engine light, engine misfire, … Read more
Your Audi A4’s electrical system provides early warning signs of possible trouble. Each of those warnings has a unique error code to help with the diagnosis. P0234 is a standard OBD2 trouble code that can occur in the A4. In layman’s terms, it indicates a potential problem with an engine’s forced induction system, and you … Read more
P0000 is a rare OBD2 fault code that can affect the Audi A4. While there are over 10,000 DTC “P” codes, this is the only one reserved for “no fault detected” in your car’s ECU (engine control unit) memory. It tells the scanner accessing the ECU that no codes are stored. The most common reason … Read more
If your Audi A4 has a humming noise at high speed, it can be distracting and, depending on the cause, dangerous. We’ve outlined the most common reasons why a humming noise in your car gets louder with speed. We’ve also provided an audio sample of each issue to help determine what’s causing the hum. Audi … Read more