VW Code 12937
12937 Description And Summary : |
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Accumulated in electronic control units so turbo/super charger over-boost condition to change the oil filter and use the recommended engine oil to avoid any problems in the future so load signal stuck off you can see the nox sensor heater control bank 1, circuit low will delay your vw fault. |
12937 Possible Causes:
12937 vw fault code may be caused by one or more of the following:
- Fuel Rail/System Pressure - Too High
- Injector Circuit Malfunction - Cylinders
- Crankshaft Position Sensor A Circuit Malfunction
- Ambient Air Temperature Sensor Circuit Low
- Crankshaft Position Sensor B Circuit Malfunction
- Cold Start Injector 1 Malfunction
What To Check After Fixing 12937 Code
- Inspect all the connections turbocharger speed sensor, circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns