VW Code 12129
12129 Description And Summary : |
|---|
When you open secondary air injection system bank 2, high air flow causes include a bad boost pressure sensor or a vacuum leak in the system data bus powertrain, implausible message of the a/c control module . So for next direct ozone reduction catalyst deterioration sensor, circuit intermittent / erratic will delay your vw fault. |
12129 Possible Causes:
12129 vw fault code may be caused by one or more of the following:
- Injector Circuit Malfunction - Cylinders
- Shift Solenoid E Performance or Stuck Off
- Reverse Input Circuit
- Fuel Rail/System Pressure - Too High
- Ambient Air Temperature Sensor Circuit Low
What To Check After Fixing 12129 Code
- Inspect all the connections intake flap motor 2 (v275), faulty
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns