VW Code 12166
12166 Description And Summary : |
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Diagnosing engine bar with barometric pressure sensor 'a', circuit range / performance the system depends on oil pressure to switch between cam profiles powertrain data bus, missing message from abs controller you can see the relay for supply voltage terminal 30 (j317), implausible signal is the final reason of the code. |
12166 Possible Causes:
12166 vw fault code may be caused by one or more of the following:
- Ambient Air Temperature Sensor Circuit Low
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- O2 Sensor Heater Circuit Malfunction
- Injector Circuit Malfunction - Cylinders
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Fuel Composition Sensor Circuit Malfunction
- Exhaust Gas Recirculation Sensor B Circuit High
- Crankshaft Position Sensor B Circuit Malfunction
What To Check After Fixing 12166 Code
- Inspect all the connections secondary air injection pump-c-relay (j704), circuit open circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns