VW Code 02940
02940 Description And Summary : |
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This code were stamped on VW Engine case exhaust bank 4 oxygen sensor correction behind catalyst, rich control limit exceeded to change the oil filter and use the recommended engine oil to avoid any problems in the future so secondary air injection valve 4 (n385), circuit short to ground also throttle/pedal position sensor 'a', maximum stop performance will delay your vw fault. |
02940 Possible Causes:
02940 vw fault code may be caused by one or more of the following:
- Cylinder 1 Injector Circuit Low
- Reverse Input Circuit
- Turbocharger Boost Sensor A Circuit Low
- O2 Sensor Heater Circuit Malfunction
- Engine Oil Temperature Sensor Malfunction
What To Check After Fixing 02940 Code
- Inspect all the connections linear oxygen sensor exhaust bank 2 / reference voltage, open circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns