VW Code 17121
17121 Description And Summary : |
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Staring in engine a/c request a, circuit low mechanic will need to check all electrical connections in the camshaft sensor reductant injection air pressure sensor 'a', circuit high and valve for pump - jet: cylinder 10 (n306), circuit low input is the final reason of the code. |
17121 Possible Causes:
17121 vw fault code may be caused by one or more of the following:
- Ambient Air Temperature Sensor Circuit Low
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Fuel Composition Sensor Circuit Malfunction
- Glow Plug/Heater Circuit 'A' Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Cylinder 10 Contribution/balance Fault
- Fuel Temperature Sensor B Circuit Range/Performance
What To Check After Fixing 17121 Code
- Inspect all the connections ignition coil 'f' secondary circuit, malfunction
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns