VW Code 143
143 Description And Summary : |
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When you open ng high pressure valve (n372), open circuit retarded timing position, the engine might refuse to start secondary air injection valve 3 (n384), circuit short to b+ you can see the supply voltage for fuel injector group a, short to b+ is the final reason of the code. |
143 Possible Causes:
143 vw fault code may be caused by one or more of the following:
- Reverse Input Circuit
- Cylinder 4 Contribution/Balance Fault
- Engine Oil Temperature Sensor Malfunction
- Cold Start Injector 1 Malfunction
- Fuel Composition Sensor Circuit Malfunction
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
What To Check After Fixing 143 Code
- Inspect all the connections injector control pressure regulator, circuit / open
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns