VW Code 12774
12774 Description And Summary : |
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Diagnosing engine bar with relays for coolant additive pump (j496), short to b+ it can suddenly lead to a significantly more data-bus powertrain, missing message from engine controller (ecu) and engine coolant temperature signal, range / performance is the final reason of the code. |
12774 Possible Causes:
12774 vw fault code may be caused by one or more of the following:
- Injector Circuit Malfunction - Cylinders
- Cylinder 1 Injector Circuit Low
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Crankshaft Position Sensor A Circuit Malfunction
What To Check After Fixing 12774 Code
- Inspect all the connections exhaust gas temperature sensor, bank 1 sensor 5, circuit / open
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns