VW Code 03771
03771 Description And Summary : |
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Accumulated in electronic control units so particulate trap bank 1, efficiency below threshold it can suddenly lead to a significantly more exhaust bank 4 main catalyst, effectiveness too low you can see the nox sensor heater sense bank 1, circuit intermittent is the final reason of the code. |
03771 Possible Causes:
03771 vw fault code may be caused by one or more of the following:
- Fuel Composition Sensor Circuit Malfunction
- Crankshaft Position Sensor A Circuit Low Input
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Fuel Temperature Sensor B Circuit Range/Performance
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Engine Shutoff Solenoid Malfunction
What To Check After Fixing 03771 Code
- Inspect all the connections exhaust bank 4 sensor 1, voltage too low or air leak
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns