P0406 is a generic OBDII Diagnostic code. It deals with the signal coming from the EGR system. In this case, it means that the signal coming from the EGR system is higher than the specified range Since it is a generic code, it has the same meaning for the Audi Q7 as it would … Read more
Your Audi Q7‘s braking system is designed to handle thousands of miles of braking with no intervention from you. When its brakes begin to squeak, they are telling you that they need some attention. The most typical cause of squeaky brakes are the brake pads themselves, but there are other issues that can cause … Read more
P0405 is a generic OBDII trouble code. It deals with the signal coming from the EGR system. Since it is a generic code, it has the same meaning for the Audi Q7 as it would any other vehicle. The EGR system allows a certain amount of the Q7’s exhaust to re-enter the combustion chamber, … Read more
P0431 is a standard OBDII trouble code, which means that it has the same meaning for the Audi Q7 as it would any other vehicle. It is closely related to P0430 (which is one of the most popular OBDII codes). Warm Up Catalyst Efficiency → Below Threshold (Bank 2) When it’s the only trouble code … Read more
P0421 is a relatively rare OBDII trouble code. It’s generic, which means it has the same definition for the Audi Q7 as it would any other vehicle. It is technically defined as “Warm Up Catalyst Efficiency → Below Threshold (Bank 1)”. In layman’s terms, it indicates that your Audi Q7’s catalytic converter is not scrubbing pollutants efficiently … Read more
P0411 is a general OBDII trouble code, which means that it has the same meaning for the Audi Q7 as it would any other car or truck. By definition, the code is letting you know that the ECM has detected incorrect flow in the secondary air injection system. P0411: Secondary Air Injection System → Incorrect … Read more
P0740 is one of the most common transmission trouble codes. It means that the Q7‘s computer has detected that there is an issue with the torque converter clutch (TCC) solenoid circuit. P0740: Torque Converter Clutch Circuit Malfunction The TCC “locks” the drivetrain, which allows for a true mechanical connection between the transmission … Read more
P0160 is a standard OBDII trouble code. It has the same meaning for any vehicle with OBDII, including the Audi Q7. When a vehicle has P0160, the PCM/ECM is not detecting any activity from the sensor. It doesn’t mean that the O2 sensor isn’t getting power, but that the voltage isn’t changing, which is … Read more
P0118 is a common OBDII trouble code. It is a general code, which means that it’s going to have the same meaning for the Audi Q7 as it would any other vehicle. P0118: Engine Coolant Temp Sensor Circuit → High Input This code is thrown when the resistance coming from the coolant temp sensor … Read more
P0410 is a generic OBDII trouble code. This means that it has the same meaning for the Audi Q7 as it would any other vehicle. It is letting you know that there is an issue with the secondary air injection system. P0410: Secondary Air Injection System → Malfunction The secondary air injection system injects air … Read more