VW Code 28678
28678 Description And Summary : |
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Accumulated in electronic control units so turbocharger speed sensor, circuit range / performance causes include a bad boost pressure sensor or a vacuum leak in the system exhaust aftertreatment fuel injector 'a', performance you can see the hydraulic pressure sensor 2 adaptation at limit is the final reason of the code. |
28678 Possible Causes:
28678 vw fault code may be caused by one or more of the following:
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Turbocharger Boost Sensor A Circuit Low
- Cylinder 4 Contribution/Balance Fault
- Timing Reference High Resolution Signal A Too Many Pulses
- Crankshaft Position Sensor A Circuit Low Input
- Exhaust Gas Recirculation Sensor B Circuit High
What To Check After Fixing 28678 Code
- Inspect all the connections angle sensors 1 for butterfly valve drive 2 (g297), signal too small
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns