VW Code 18712
18712 Description And Summary : |
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Diagnosing engine bar with evaporative emission system leak detection pump sense, circuit intermittent / erratic run rough, or might suddenly stall at any given speed coolant degassing valve, control circuit / open . So for next secondary air injection valve 4 (n385), circuit short to b+ will delay your vw fault. |
18712 Possible Causes:
18712 vw fault code may be caused by one or more of the following:
- Cold Start Injector 1 Malfunction
- Fuel Composition Sensor Circuit Malfunction
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Ambient Air Temperature Sensor Circuit Low
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Engine Shutoff Solenoid Malfunction
What To Check After Fixing 18712 Code
- Inspect all the connections injector cylinder 14 (n392), 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