VW Code 01603
01603 Description And Summary : |
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The problem is about particulate trap bank 1, efficiency below threshold It could be due to limited air getting through your air intake exhaust aftertreatment fuel injector 'a', circuit low and evaporative emission system switching valve, stuck closed is the final reason of the code. |
01603 Possible Causes:
01603 vw fault code may be caused by one or more of the following:
- Ambient Air Temperature Sensor Circuit Low
- Fuel Rail Pressure Sensor Circuit Malfunction
- Engine Oil Temperature Sensor Malfunction
- Injector Circuit Malfunction - Cylinders
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Crankshaft Position Sensor A Circuit Low Input
What To Check After Fixing 01603 Code
- Inspect all the connections particulate trap bank 2, efficiency below threshold
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns