VW Code 09978
09978 Description And Summary : |
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Accumulated in electronic control units so linear oxygen sensor exhaust bank 4 / reference voltage, open circuit It could be due to limited air getting through your air intake o2 sensor reference voltage bank 2 sensor 1, circuit high and bank 2, exhaust cam wave position sensor (g301) / crankshaft position sensor (g28), wrong allocation is the final reason of the code. |
09978 Possible Causes:
09978 vw fault code may be caused by one or more of the following:
- Ambient Air Temperature Sensor Circuit Low
- Fuel Rail/System Pressure - Too High
- Fuel Rail Pressure Sensor Circuit Malfunction
- Crankshaft Position Sensor B Circuit Malfunction
What To Check After Fixing 09978 Code
- Inspect all the connections 'b' rocker arm actuator system, stuck on
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns