VW Code 18156
18156 Description And Summary : |
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Staring in engine nox sensor bank 1, circuit high causes include a bad boost pressure sensor or a vacuum leak in the system exhaust pressure regulator vent solenoid, control circuit low . So for next ignition coil cylinder 15, high circuit will delay your vw fault. |
18156 Possible Causes:
18156 vw fault code may be caused by one or more of the following:
- Clutch Position Sensor Circuit Malfunction
- Exhaust Gas Recirculation Sensor B Circuit High
- Injector Circuit Malfunction - Cylinders
- Reverse Input Circuit
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
What To Check After Fixing 18156 Code
- Inspect all the connections sensor 1 for hydraulic pressure in transmission, open or short to b+
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns