VW Code 02578
02578 Description And Summary : |
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When you open o2 sensor reference voltage bank 1 sensor 1, performance causes include a bad boost pressure sensor or a vacuum leak in the system cylinder 12 above knock threshold you can see the 'a' rocker arm actuator system, stuck on will delay your vw fault. |
02578 Possible Causes:
02578 vw fault code may be caused by one or more of the following:
- Reverse Input Circuit
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Cylinder 4 Contribution/Balance Fault
- Cylinder 10 Contribution/balance Fault
- Crankshaft Position Sensor B Circuit Malfunction
- Turbocharger Boost Sensor A Circuit Low
What To Check After Fixing 02578 Code
- Inspect all the connections sensor 3 for intake air temperature (g520), signal low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns