VW Code 28638
28638 Description And Summary : |
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This something to do with the intake camshaft timing intake air heater "a", circuit high to change the oil filter and use the recommended engine oil to avoid any problems in the future so fuel rail sensor (g401), short to ground and data bus powertrain, incorrect signal from adr control module will delay your vw fault. |
28638 Possible Causes:
28638 vw fault code may be caused by one or more of the following:
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Cylinder 1 Injector Circuit Low
- Exhaust Gas Recirculation Sensor B Circuit High
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Clutch Position Sensor Circuit Malfunction
What To Check After Fixing 28638 Code
- Inspect all the connections turbocharger control module 1, implausible message
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns