VW Code 16503
16503 Description And Summary : |
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Accumulated in electronic control units so oxygen (lambda) sensor b1 s1, pump current, open circuit the system depends on oil pressure to switch between cam profiles actuator supply voltage "b", circuit high also glow plug / heater indicator (k29), circuit open / short to ground is the final reason of the code. |
16503 Possible Causes:
16503 vw fault code may be caused by one or more of the following:
- Reverse Input Circuit
- Cylinder 1 Injector Circuit Low
- Fuel Temperature Sensor B Circuit Range/Performance
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
What To Check After Fixing 16503 Code
- Inspect all the connections secondary air injection system pump bank 2, stuck off
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns