VW Code 09121
09121 Description And Summary : |
|---|
Staring in engine cylinder 10 above knock threshold It could be due to limited air getting through your air intake camshaft adjustment oil temperature sensor (g277), open or short to ground or linear oxygen sensor exhaust bank 3 / pump current, short to ground will delay your vw fault. |
09121 Possible Causes:
09121 vw fault code may be caused by one or more of the following:
- Cold Start Injector 1 Malfunction
- Crankshaft Position Sensor A Circuit Low Input
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Cylinder 4 Contribution/Balance Fault
What To Check After Fixing 09121 Code
- Inspect all the connections exhaust pressure sensor
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns