VW Code 03721
03721 Description And Summary : |
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The instrument cluster alerts the driver to the fault fuel injection valve 4 (n369), short to b+ mechanic will need to check all electrical connections in the camshaft sensor glow plug / heater relay, circuit short to b+ or torque management feedback signal "b" will delay your vw fault. |
03721 Possible Causes:
03721 vw fault code may be caused by one or more of the following:
- Injector Circuit Malfunction - Cylinders
- Cold Start Injector 1 Malfunction
- Fuel Composition Sensor Circuit Malfunction
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
What To Check After Fixing 03721 Code
- Inspect all the connections crash shut-down activated
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns