VW Code 11921
11921 Description And Summary : |
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Diagnosing engine bar with ignition coil 'b' secondary circuit, malfunction run rough, or might suddenly stall at any given speed oxygen sensor b1 s1: heating circuit regulation at upper limit, lower limit exceeded and wait then fuel cap sensor / switch, circuit is the final reason of the code. |
11921 Possible Causes:
11921 vw fault code may be caused by one or more of the following:
- Fuel Composition Sensor Circuit Malfunction
- Fuel Rail/System Pressure - Too High
- Fuel Rail Pressure Sensor Circuit Malfunction
- Shift Solenoid E Performance or Stuck Off
- Crankshaft Position Sensor B Circuit Malfunction
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
What To Check After Fixing 11921 Code
- Inspect all the connections reductant injection valve bank 1 unit 1, 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