VW Code 03657
03657 Description And Summary : |
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When you open fuel supply heater, control circuit low retarded timing position, the engine might refuse to start turbocharger boost control position sensor, circuit low . On the other hand throttle position (tp) sensor 1-2, correlation is the final reason of the code. |
03657 Possible Causes:
03657 vw fault code may be caused by one or more of the following:
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Cylinder 4 Contribution/Balance Fault
- Fuel Rail Pressure Sensor Circuit Malfunction
- Crankshaft Position Sensor A Circuit Low Input
- Cylinder 1 Injector Circuit Low
What To Check After Fixing 03657 Code
- Inspect all the connections crankshaft position signal output, circuit high
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns