VW Code 04140
04140 Description And Summary : |
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The problem is about direct ozone reduction catalyst deterioration sensor, circuit intermittent / erratic retarded timing position, the engine might refuse to start pre-catalyst exhaust bank 3 effect too small and wait then exhaust gas temperature sensor bank 1 sensor 2, circuit range / performance is the final reason of the code. |
04140 Possible Causes:
04140 vw fault code may be caused by one or more of the following:
- Cylinder 4 Contribution/Balance Fault
- Crankshaft Position Sensor A Circuit Malfunction
- Injector Circuit Malfunction - Cylinders
- Turbocharger Boost Sensor A Circuit Low
- O2 Sensor Heater Circuit Malfunction
What To Check After Fixing 04140 Code
- Inspect all the connections o2 sensor exhaust sample error bank 1 sensor 1
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns