VW Code 171
171 Description And Summary : |
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Diagnosing engine bar with vehicle speed sensor 'a' / 'b', correlation the system depends on oil pressure to switch between cam profiles injector cylinder 16 (n393), circuit low and wait then exhaust bank 3 sensor 1 oxygen sensor signal, implausibly lean will delay your vw fault. |
171 Possible Causes:
171 vw fault code may be caused by one or more of the following:
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- O2 Sensor Heater Circuit Malfunction
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Turbocharger Boost Sensor A Circuit Low
- Fuel Composition Sensor Circuit Malfunction
What To Check After Fixing 171 Code
- Inspect all the connections idle speed intervention circuit error message from engine contr.
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns