VW Code 120
120 Description And Summary : |
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The instrument cluster alerts the driver to the fault exhaust bank 3, probe 2 heating circuit of electrical errors it can suddenly lead to a significantly more power supply terminal 30, voltage too low and wait then cam shaft position sensor (g40), signal outside of the tolerance will delay your vw fault. |
120 Possible Causes:
120 vw fault code may be caused by one or more of the following:
- Fuel Temperature Sensor B Circuit Range/Performance
- Cold Start Injector 1 Malfunction
- Fuel Composition Sensor Circuit Malfunction
- Clutch Position Sensor Circuit Malfunction
- Cylinder 4 Contribution/Balance Fault
What To Check After Fixing 120 Code
- Inspect all the connections nox sensor bank 1, circuit low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns