VW Code 28438
28438 Description And Summary : |
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The instrument cluster alerts the driver to the fault relays for electrical fuel pump 2 (j49), short-circuit after pluses causes include a bad boost pressure sensor or a vacuum leak in the system hydraulic pressure sensor 1, range / performance also direct ozone reduction catalyst temperature sensor circuit is the final reason of the code. |
28438 Possible Causes:
28438 vw fault code may be caused by one or more of the following:
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- O2 Sensor Heater Circuit Malfunction
- Crankshaft Position Sensor A Circuit Malfunction
- Cold Start Injector 1 Malfunction
What To Check After Fixing 28438 Code
- Inspect all the connections camshaft adjustment oil temperature sensor (g277), implausible signal
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns