B3121 Audi Fault Code
If you want to know how to repair B3121 OBD 2 code, it is necessary to find out what type of fault it is. The reason for this is that each type of fault needs different repair steps.
Meaning of Audi B3121 OBD/2 ErrorB3121 Code Check :
B3121 OBD 2 code troubleshooting is a process of resolving the problem with the car engine by inspecting the error codes and checking for any specific issues.
| B | Body (B) Code |
| 3 | Throttle/Pedal Position Sensor/Switch A Circuit Intermittent |
| 1 | IC Circuit High Voltage |
| 2 | Cruise Inhibit Control Circuit |
| 1 | Water Pump Mechanical Defect Detected |
Common B3121 Error :
Because many things can trigger the error, finding the root cause can be tricky. This often makes repairing code B3121 a long and arduous task. Other times, more than one problem can trigger this code.
It's advisable to leave this one to the professionals. In most cases, fixing code B3121 does not cost a lot to repair. Once the code B3121 is repaired, your car will run better, have more power, and get better fuel mileage.