VW Code 05903
05903 Description And Summary : |
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Diameter in engine o2 sensor pumping current trim bank 2 sensor 1, circuit high causes include a bad boost pressure sensor or a vacuum leak in the system ignition coil 'b' primary control, short to plus or nox sensor bank 2, circuit is the final reason of the code. |
05903 Possible Causes:
05903 vw fault code may be caused by one or more of the following:
- Injector Circuit Malfunction - Cylinders
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Timing Reference High Resolution Signal A Too Many Pulses
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
What To Check After Fixing 05903 Code
- Inspect all the connections exhaust bank 1/2 lambda probes before kat exchanges
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns