VW Code 28778
28778 Description And Summary : |
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When you open ignition coil 'a' primary control, circuit low run rough, or might suddenly stall at any given speed valve for pump - jet: cylinder 12 (n308), electrical malfunction you can see the engine coolant temperature sensor 2 (g83), circuit is the final reason of the code. |
28778 Possible Causes:
28778 vw fault code may be caused by one or more of the following:
- Fuel Rail/System Pressure - Too High
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Clutch Position Sensor Circuit Malfunction
- Fuel Composition Sensor Circuit Malfunction
What To Check After Fixing 28778 Code
- Inspect all the connections motor for intake manifold flap (v157), short to b+
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns