VW Code 18971
18971 Description And Summary : |
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Staring in engine intake manifold runner control, circuit high bank 1 causes include a bad boost pressure sensor or a vacuum leak in the system secondary air injection system air flow/pressure sensor bank 2, circuit . So for next ecm/pcm power input, signal is the final reason of the code. |
18971 Possible Causes:
18971 vw fault code may be caused by one or more of the following:
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Crankshaft Position Sensor B Circuit Malfunction
- Exhaust Gas Recirculation Sensor B Circuit High
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Ignition Coil A Primary/Secondary Circuit Malfunction
- O2 Sensor Heater Circuit Malfunction
- Cold Start Injector 1 Malfunction
What To Check After Fixing 18971 Code
- Inspect all the connections throttle/pedal position sensor / switch 'e' / 'f', voltage correlation
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns