VW Code 12766
12766 Description And Summary : |
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This code were stamped on VW Engine case valve for pump - jet, cylinder 1 (n240), electrical malfunction causes include a bad boost pressure sensor or a vacuum leak in the system exhaust bank 3 sensor 1, voltage too low or air leak you can see the fuel rail sensor (g401), open circuit is the final reason of the code. |
12766 Possible Causes:
12766 vw fault code may be caused by one or more of the following:
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Ambient Air Temperature Sensor Circuit Low
- Cylinder 1 Injector Circuit Low
- Exhaust Gas Recirculation Sensor B Circuit High
- Turbocharger Boost Sensor A Circuit Low
- Fuel Temperature Sensor B Circuit Range/Performance
What To Check After Fixing 12766 Code
- Inspect all the connections reductant temperature sensor, circuit intermittent
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns