VW Code 08721
08721 Description And Summary : |
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Accumulated in electronic control units so fuel injection valve 4 (n369), short to b+ mechanic will need to check all electrical connections in the camshaft sensor reductant injection valve bank 1 unit 2, circuit low and 'b' rocker arm actuator control, circuit low will delay your vw fault. |
08721 Possible Causes:
08721 vw fault code may be caused by one or more of the following:
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Crankshaft Position Sensor B Circuit Malfunction
- Timing Reference High Resolution Signal A Too Many Pulses
- Crankshaft Position Sensor A Circuit Low Input
- Reverse Input Circuit
- Cold Start Injector 1 Malfunction
What To Check After Fixing 08721 Code
- Inspect all the connections relays for small amount of heat (j359), short-circuit after pluses
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns