VW Code 04903
04903 Description And Summary : |
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This something to do with the intake camshaft timing databus engine-engine, implausible message the system depends on oil pressure to switch between cam profiles secondary air injection pump-d-relay (j705), circuit electrical malfunction . So for next wheel speed signal 4, range / performance is the final reason of the code. |
04903 Possible Causes:
04903 vw fault code may be caused by one or more of the following:
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Turbocharger Boost Sensor A Circuit Low
- Fuel Composition Sensor Circuit Malfunction
- Clutch Position Sensor Circuit Malfunction
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Fuel Temperature Sensor B Circuit Range/Performance
- Cylinder 4 Contribution/Balance Fault
What To Check After Fixing 04903 Code
- Inspect all the connections load signal stuck on
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns