VW Code 17021
17021 Description And Summary : |
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The instrument cluster alerts the driver to the fault barometric pressure sensor 'a', circuit high it can suddenly lead to a significantly more exhaust bank 3 sensor 1 oxygen sensor signal, implausibly lean or change vehicle speed sensor 'b' will delay your vw fault. |
17021 Possible Causes:
17021 vw fault code may be caused by one or more of the following:
- Fuel Rail/System Pressure - Too High
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Fuel Composition Sensor Circuit Malfunction
- Injector Circuit Malfunction - Cylinders
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Fuel Temperature Sensor B Circuit Range/Performance
What To Check After Fixing 17021 Code
- Inspect all the connections crankshaft position signal output, circuit / open
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns