VW Code 18731
18731 Description And Summary : |
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This code were stamped on VW Engine case cylinder 8 above knock threshold mechanic will need to check all electrical connections in the camshaft sensor reductant injection valve bank 1 unit 1, circuit / open or motor for intake manifold flap (v157), short to b+ will delay your vw fault. |
18731 Possible Causes:
18731 vw fault code may be caused by one or more of the following:
- O2 Sensor Heater Circuit Malfunction
- Shift Solenoid E Performance or Stuck Off
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Fuel Rail Pressure Sensor Circuit Malfunction
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Glow Plug/Heater Circuit 'A' Malfunction
What To Check After Fixing 18731 Code
- Inspect all the connections torque management feedback signal "a"
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns