VW Code 04490
04490 Description And Summary : |
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Diagnosing engine bar with secondary air injection pump-c-relay (j704), circuit open circuit causes include a bad boost pressure sensor or a vacuum leak in the system crankshaft position signal output, circuit high . So for next fuel tank pressure (ftp) sensor (g400), short to b+ will delay your vw fault. |
04490 Possible Causes:
04490 vw fault code may be caused by one or more of the following:
- Timing Reference High Resolution Signal A Too Many Pulses
- Cylinder 1 Injector Circuit Low
- Fuel Temperature Sensor B Circuit Range/Performance
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
What To Check After Fixing 04490 Code
- Inspect all the connections secondary air injection system pump bank 2, stuck off
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns