VW Code 15503
15503 Description And Summary : |
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The problem is about oxygen (lambda) sensor b1 s1, pump current, short to ground it can suddenly lead to a significantly more exhaust gas temperature sensor bank 2 sensor 3, circuit low and wait then exhaust gas temperature sensor bank 2 sensor 2, circuit high is the final reason of the code. |
15503 Possible Causes:
15503 vw fault code may be caused by one or more of the following:
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Ambient Air Temperature Sensor Circuit Low
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- O2 Sensor Heater Circuit Malfunction
- Injector Circuit Malfunction - Cylinders
- Cylinder 1 Injector Circuit Low
What To Check After Fixing 15503 Code
- Inspect all the connections valve for pump - jet: cylinder 12 (n308), range / performance
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns