P0141 is a very common OBDII code that occurs in the Audi A4. It is caused by a failure in one of the elements that heat the oxygen sensors, specifically bank 1 sensor 2, which is downstream from the catalytic converter. It technically stands for: The purpose of the heated element in the oxygen sensor … Read more
P0135 is a very common OBDII code that occurs in the Audi A4. It is caused by a failure in one of the oxygen sensors heated elements, specifically bank 1 sensor 1. It technically stands for: The purpose of the heated element in the oxygen sensor is to quickly bring your O2 sensor … Read more
The P0128 OBD II trouble code indicates that your Audi A4’s engine coolant temperature has not reached its required operating temperature within a certain amount of time after starting the car. This code can appear as soon as you start your vehicle, or it can also occur while driving. It’s essential to address this issue … Read more
P0122 is a common trouble code with the Audi A4. It’s an OBDII code that references issues with the Throttle Position Sensor (TPS). It is relatively serious problem since it can leave your vehicle stranded or severely limited. OBDII code P0122 is a serious problem that requires serious attention. Diagnosing it can be … Read more
P0121 is a relatively common trouble code with the Audi A4. It’s an OBDII code and has to do with the Throttle Pedal Position Sensor. It is relatively serious problem since it can leave your vehicle in failsafe mode. OBDII code P0121 is a serious problem that requires serious attention. Diagnosing it can … Read more
This page is meant to help you troubleshoot the Audi A4 P0420 trouble code. It covers the P0420 code’s meaning, symptoms, causes, and possible solutions. P0420 is the most common OBDII code and is virtually never a breakdown risk. A failing oxygen sensor or bad catalytic converter are the most common causes of P0420. Table … Read more
P0013 is a frequent OBDII trouble code. It is generic, which means that it has the same meaning for the Audi A4, as it would any other vehicle. It only affects vehicles with Variable Valve Timing. Below we’ll outline the major symptoms and causes of P0013, as well as the most common fixes. … Read more
P0014 is a relatively common trouble code for vehicles that have Variable Valve Timing (VVT). This includes the Audi A4. VVT adjusts the position of the camshaft(s) to maximize the combustion efficiency of the motor. P0014 means that the camshaft position is too far advanced from where it should be in relation to normal operating … Read more
One of the most common trouble codes with the Audi A4 is the P0456 code. This trouble code references a number that is given to you when you plug your A4 into an OBDII scanner. P0456 Indicates that there is a small leak in the evaporative emission control system. It often appears with or is … Read more
P0455 in the Audi A4 is a trouble code that indicates your truck has a LARGE evaporative emissions leak. With this code, you shouldn’t notice any symptoms besides perhaps a noticeable fuel smell. P0455 usually is not an immediate threat to the driveability of your A4. But, whenever the check engine light is on, it’s … Read more