P2196 is a generic diagnostic trouble code that indicates that your Audi A4’s first oxygen sensor on bank one is stuck rich. It does not necessarily mean that the vehicle itself is running too rich. This code is the opposite of code P2195, which indicates the oxygen sensor is stuck lean. P2196 Definition: Oxygen Sensor … Read more
P2135 is a generic powertrain code that can affect any make or model of vehicle that has a “drive by wire” throttle system (almost every vehicle made today). P2135 TPS Switch “A/B” Voltage Correlation If your Audi A4 has P2135 it is considered “drive by wire”. Which means that it uses sensors and actuators to control … Read more
P2197 is a general DTC code that indicates that the signal coming from your Audi A4’s first O2 sensor on the bank two side of the engine is stuck giving off a lean signal. The voltage reading from a normal oxygen sensor should look something like a heartbeat, whereas with P2197 the voltage looks like a … Read more
P2195 is a general OBD2 code that indicates that the signal coming from your Audi A4’s 1’st O2 sensor on Bank 1 Sensor 1 is stuck lean. DTC P2195 is a general code, which means that it has the same meaning for any make, model, or year. It is most typically caused by a bad … Read more
P2272 in the Audi A4 is a general diagnostic trouble code. It means that the “bank 2” downstream oxygen sensor (behind the catalytic converter) is continuously sending voltage that indicates a lean air/fuel mixture. This does not necessarily mean that the vehicle is running lean (although it can, but usually doesn’t). P2272 is typically … Read more
P2270 is a general DTC trouble code, which means it has the same meaning for the Audi A4 as it would any other vehicle. It means that the oxygen sensor located on bank 1 behind the catalytic converter is continuously sending voltage that indicates a lean air/fuel mixture. This does not necessarily mean that … Read more
Your Audi A4 utilizes an evaporative emissions control (EVAP) system to migrate fuel vapors from the gas tank and fuel filler neck, and sends them to the engine to be burned off. When the pressure inside of the fuel tank is too high, P0453, is thrown and the check engine light comes on. If the only … Read more
P0452 is a generic OBD II code that can occur in the Audi A4. It means that your A4’s EVAP system has detected low fuel tank pressure. The evaporative emissions control system (EVAP) sends fuel vapors from the fuel tank to the intake manifold to be burned off. When the pressure in the system is … Read more
P2189 is a DTC code that can occur in your Audi A4. It indicates the air fuel mixture is too lean at idle, specifically in bank 2 (we’ll cover how to find bank 2 later). Its is different from the much more common P0174, which indicates that bank 2 is lean at any engine speed. … Read more
P2187 is a DTC code that can occur in the Audi A4. It indicates the air fuel mixture is too lean at idle. The technical definition for P2187 “System Too Lean at Idle: Bank 1”. The code is thrown after your A4’s oxygen sensor on Bank 1 (usually sensor 1) has detected that the air … Read more