VW Code 12633
12633 Description And Summary : |
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The problem is about a/c request b, circuit retarded timing position, the engine might refuse to start post catalyst fuel trim system, low limit and ignition switch accessory position, circuit high is the final reason of the code. |
12633 Possible Causes:
12633 vw fault code may be caused by one or more of the following:
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Turbocharger Boost Sensor A Circuit Low
- O2 Sensor Heater Circuit Malfunction
- Engine Shutoff Solenoid Malfunction
- Glow Plug/Heater Circuit 'A' Malfunction
What To Check After Fixing 12633 Code
- Inspect all the connections turbocharger boost control position sensor 'b', circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns