VW Code 02578
02578 Description And Summary : |
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When you open injector control pressure, too high retarded timing position, the engine might refuse to start secondary air injection valve 3 (n384), circuit short to b+ . On the other hand post catalyst fuel trim system, low limit is the final reason of the code. |
02578 Possible Causes:
02578 vw fault code may be caused by one or more of the following:
- Crankshaft Position Sensor B Circuit Malfunction
- Exhaust Gas Recirculation Sensor B Circuit High
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Fuel Temperature Sensor B Circuit Range/Performance
- Fuel Composition Sensor Circuit Malfunction
- Engine Shutoff Solenoid Malfunction
What To Check After Fixing 02578 Code
- Inspect all the connections reductant injection valve bank 1 unit 1, circuit low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns