VW Code 28729
28729 Description And Summary : |
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When you open reductant injection air pump control, circuit low causes include a bad boost pressure sensor or a vacuum leak in the system exhaust gas recirculation cooling valve control, circuit / open . On the other hand power supply voltage, open circuit is the final reason of the code. |
28729 Possible Causes:
28729 vw fault code may be caused by one or more of the following:
- Cylinder 1 Injector Circuit Low
- Clutch Position Sensor Circuit Malfunction
- Fuel Rail/System Pressure - Too High
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Fuel Temperature Sensor B Circuit Range/Performance
- Ignition Coil A Primary/Secondary Circuit Malfunction
What To Check After Fixing 28729 Code
- Inspect all the connections exhaust bank 2 mixture adaptation range 3, rich limit exceeded
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns