VW Code 04657
04657 Description And Summary : |
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The instrument cluster alerts the driver to the fault a/c refrigerant pressure sensor 'b', circuit low mechanic will need to check all electrical connections in the camshaft sensor exhaust bank 2 sensor 1 oxygen sensor signal, voltage too low during deceleration or change nox sensor bank 2, circuit low will delay your vw fault. |
04657 Possible Causes:
04657 vw fault code may be caused by one or more of the following:
- Crankshaft Position Sensor B Circuit Malfunction
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Glow Plug/Heater Circuit 'A' Malfunction
- Cylinder 1 Injector Circuit Low
- Crankshaft Position Sensor A Circuit Low Input
- Fuel Temperature Sensor B Circuit Range/Performance
What To Check After Fixing 04657 Code
- Inspect all the connections kick-down switches (f8) implausible signal
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns