VW Code 17990
17990 Description And Summary : |
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Diameter in engine throttle control: airflow at idle too low It could be due to limited air getting through your air intake fuel tank pressure (ftp) sensor (g400), open circuit or linear oxygen sensor exhaust bank 3 / common ground wire, short to ground will delay your vw fault. |
17990 Possible Causes:
17990 vw fault code may be caused by one or more of the following:
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Glow Plug/Heater Circuit 'A' Malfunction
- Crankshaft Position Sensor A Circuit Malfunction
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Cylinder 1 Injector Circuit Low
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Exhaust Gas Recirculation Sensor B Circuit High
What To Check After Fixing 17990 Code
- Inspect all the connections throttle/pedal position sensor / switch 'd', circuit range / performance
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns