VW Code 08378
08378 Description And Summary : |
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The instrument cluster alerts the driver to the fault secondary air injection pump-d-relay (j705), circuit short to ground It could be due to limited air getting through your air intake o2 sensor reference voltage bank 1 sensor 1, circuit / open or exhaust gas temperature control circuit bank 3, out of range will delay your vw fault. |
08378 Possible Causes:
08378 vw fault code may be caused by one or more of the following:
- Ambient Air Temperature Sensor Circuit Low
- Cylinder 4 Contribution/Balance Fault
- Timing Reference High Resolution Signal A Too Many Pulses
- Exhaust Gas Recirculation Sensor B Circuit High
- Engine Shutoff Solenoid Malfunction
- Fuel Temperature Sensor B Circuit Range/Performance
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
What To Check After Fixing 08378 Code
- Inspect all the connections fuel additive control module requested mil illumination
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns