VW Code 03731
03731 Description And Summary : |
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Diameter in engine exhaust bank 4, sensor 2 heater circuit, electrical error It could be due to limited air getting through your air intake sensor 2 for hydraulic pressure in transmission, open or short to b+ or change 'b' rocker arm actuator system, performance or stuck off will delay your vw fault. |
03731 Possible Causes:
03731 vw fault code may be caused by one or more of the following:
- Crankshaft Position Sensor A Circuit Malfunction
- Fuel Composition Sensor Circuit Malfunction
- Fuel Rail/System Pressure - Too High
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Injector Circuit Malfunction - Cylinders
- Cylinder 1 Injector Circuit Low
- Fuel Rail Pressure Sensor Circuit Malfunction
What To Check After Fixing 03731 Code
- Inspect all the connections direct ozone reduction catalyst temperature sensor circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns