VW Code 17921
17921 Description And Summary : |
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Staring in engine oxygen (lambda) sensor b2 s1, pump current, short to b+ run rough, or might suddenly stall at any given speed valve for pump - jet: cylinder 11 (n307), regulation range exceeded or change valve for starting with empty tank-nxxx, short to b+ will delay your vw fault. |
17921 Possible Causes:
17921 vw fault code may be caused by one or more of the following:
- Glow Plug/Heater Circuit 'A' Malfunction
- Exhaust Gas Recirculation Sensor B Circuit High
- Fuel Rail/System Pressure - Too High
- Clutch Position Sensor Circuit Malfunction
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Injector Circuit Malfunction - Cylinders
What To Check After Fixing 17921 Code
- Inspect all the connections nox sensor bank 2, circuit intermittent
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns