C3977 Audi Fault Code
If you want to know how to repair C3977 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 C3977 OBD/2 ErrorC3977 Code Check :
C3977 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.
| C | Chassis (C) Code |
| 3 | Throttle/Pedal Position Sensor/Switch A Circuit Intermittent |
| 9 | Exhaust Gas Recirculation System Valve 1 |
| 7 | Cruise Vehicle Speed/Set Speed Difference Too High |
| 7 | Compressor Differential Pressure Inlet Failed High |
Common C3977 Error :
Because many things can trigger the error, finding the root cause can be tricky. This often makes repairing code C3977 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 C3977 does not cost a lot to repair. Once the code C3977 is repaired, your car will run better, have more power, and get better fuel mileage.