VW Code 02503
02503 Description And Summary : |
|---|
This code were stamped on VW Engine case o2 sensor reference voltage bank 2 sensor 1, circuit low it can suddenly lead to a significantly more exhaust pressure sensor and wait then relays for large amount of heat (j360), disconnected or short to ground is the final reason of the code. |
02503 Possible Causes:
02503 vw fault code may be caused by one or more of the following:
- Shift Solenoid E Performance or Stuck Off
- Cylinder 4 Contribution/Balance Fault
- Crankshaft Position Sensor A Circuit Malfunction
- Fuel Rail Pressure Sensor Circuit Malfunction
- Timing Reference High Resolution Signal A Too Many Pulses
- Engine Shutoff Solenoid Malfunction
What To Check After Fixing 02503 Code
- Inspect all the connections fuel injection valve 4 (n369), open circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns