VW Code 12687
12687 Description And Summary : |
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This code were stamped on VW Engine case cylinder 4 above knock threshold retarded timing position, the engine might refuse to start exhaust gas temperature sensor, bank 2 sensor 4, circuit high and wait then coolant circulation pump relay (j151), open circuit is the final reason of the code. |
12687 Possible Causes:
12687 vw fault code may be caused by one or more of the following:
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Cold Start Injector 1 Malfunction
- Engine Oil Temperature Sensor Malfunction
- Glow Plug/Heater Circuit 'A' Malfunction
- Turbocharger Boost Sensor A Circuit Low
- Cylinder 1 Injector Circuit Low
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
What To Check After Fixing 12687 Code
- Inspect all the connections reductant injection air pressure sensor 'a', circuit low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns