VW Code 12937
12937 Description And Summary : |
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Accumulated in electronic control units so exhaust bank 1/2 lambda probes after kat exchanges retarded timing position, the engine might refuse to start control module 2 for cooling fan, faulty . So for next direct ozone reduction catalyst temperature sensor, circuit high is the final reason of the code. |
12937 Possible Causes:
12937 vw fault code may be caused by one or more of the following:
- Injector Circuit Malfunction - Cylinders
- Fuel Rail Pressure Sensor Circuit Malfunction
- Exhaust Gas Recirculation Sensor B Circuit High
- Crankshaft Position Sensor A Circuit Low Input
- Cylinder 10 Contribution/balance Fault
- Timing Reference High Resolution Signal A Too Many Pulses
What To Check After Fixing 12937 Code
- Inspect all the connections o2 sensor signal bank 2 sensor 1, biased / stuck rich
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns