VW Code 12178
12178 Description And Summary : |
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Staring in engine relay for exhaust cooling agent (n313), short to b+ the system depends on oil pressure to switch between cam profiles cylinder 4 above knock threshold . On the other hand reductant temperature sensor, circuit intermittent is the final reason of the code. |
12178 Possible Causes:
12178 vw fault code may be caused by one or more of the following:
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Fuel Composition Sensor Circuit Malfunction
- Fuel Temperature Sensor B Circuit Range/Performance
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Timing Reference High Resolution Signal A Too Many Pulses
- Cold Start Injector 1 Malfunction
What To Check After Fixing 12178 Code
- Inspect all the connections torque management request input signal a, low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns