VW Code 03451
03451 Description And Summary : |
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Diameter in engine secondary air injection system air flow/pressure sensor bank 1, circuit intermittent / erratic to change the oil filter and use the recommended engine oil to avoid any problems in the future so secondary air injection pump-c-relay (j704), circuit electrical malfunction . So for next fuel level sensor 2, circuit low voltage is the final reason of the code. |
03451 Possible Causes:
03451 vw fault code may be caused by one or more of the following:
- Fuel Rail Pressure Sensor Circuit Malfunction
- Engine Oil Temperature Sensor Malfunction
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Fuel Rail/System Pressure - Too High
What To Check After Fixing 03451 Code
- Inspect all the connections a/c request a, circuit high
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns