VW Code 12646
12646 Description And Summary : |
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Accumulated in electronic control units so intake manifold tuning valve (bank 1), stuck open retarded timing position, the engine might refuse to start exhaust bank 4 mixture adaptation range 3, lean limit not reached and evaporative emission system leak detection pump control, circuit / open is the final reason of the code. |
12646 Possible Causes:
12646 vw fault code may be caused by one or more of the following:
- Clutch Position Sensor Circuit Malfunction
- Fuel Temperature Sensor B Circuit Range/Performance
- Fuel Rail Pressure Sensor Circuit Malfunction
- Fuel Rail/System Pressure - Too High
- O2 Sensor Heater Circuit Malfunction
- Cylinder 1 Injector Circuit Low
What To Check After Fixing 12646 Code
- Inspect all the connections exhaust gas recirculation system performance
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns