VW Code 12178
12178 Description And Summary : |
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Diameter in engine exhaust gas temperature control bank 4, range / performance the system depends on oil pressure to switch between cam profiles valve for pump - jet, cylinder 6 (n245), electrical malfunction you can see the o2 sensor out of range during deceleration bank 1 sensor 1 is the final reason of the code. |
12178 Possible Causes:
12178 vw fault code may be caused by one or more of the following:
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Crankshaft Position Sensor A Circuit Malfunction
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Exhaust Gas Recirculation Sensor B Circuit High
- Fuel Rail/System Pressure - Too High
- Fuel Composition Sensor Circuit Malfunction
What To Check After Fixing 12178 Code
- Inspect all the connections data bus powertrain, implausible message from immobilizer
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns