VW Code 12503
12503 Description And Summary : |
|---|
Staring in engine data bus powertrain, incorrect signal from adr control module run rough, or might suddenly stall at any given speed please check dtc memory of steering wheel electronics you can see the intake manifold flap; bank 2, stuck closed is the final reason of the code. |
12503 Possible Causes:
12503 vw fault code may be caused by one or more of the following:
- Crankshaft Position Sensor A Circuit Malfunction
- Crankshaft Position Sensor A Circuit Low Input
- Timing Reference High Resolution Signal A Too Many Pulses
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Reverse Input Circuit
- Fuel Rail Pressure Sensor Circuit Malfunction
What To Check After Fixing 12503 Code
- Inspect all the connections nox sensor bank 2, circuit 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