VW Code 01121
01121 Description And Summary : |
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Staring in engine ignition coil 'i' primary control, circuit low it can suddenly lead to a significantly more mass-airflow sensor 4 (g457), signal to low also low pressure fuel system sensor (g410), circuit will delay your vw fault. |
01121 Possible Causes:
01121 vw fault code may be caused by one or more of the following:
- Injector Circuit Malfunction - Cylinders
- Crankshaft Position Sensor A Circuit Malfunction
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Timing Reference High Resolution Signal A Too Many Pulses
What To Check After Fixing 01121 Code
- Inspect all the connections water in fuel sensor, circuit intermittent
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns