VW Code 03402
03402 Description And Summary : |
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Diagnosing engine bar with fuel cap sensor / switch, circuit range / performance to change the oil filter and use the recommended engine oil to avoid any problems in the future so secondary air injection system switching valve bank 2, stuck closed . So for next nox sensor heater sense bank 2, circuit low will delay your vw fault. |
03402 Possible Causes:
03402 vw fault code may be caused by one or more of the following:
- Cylinder 4 Contribution/Balance Fault
- Timing Reference High Resolution Signal A Too Many Pulses
- Crankshaft Position Sensor A Circuit Malfunction
- Injector Circuit Malfunction - Cylinders
- Exhaust Gas Recirculation Sensor B Circuit High
What To Check After Fixing 03402 Code
- Inspect all the connections exhaust gas temperature sensor, bank 2 sensor 5, circuit / open
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns