VW Code 28989
28989 Description And Summary : |
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Staring in engine ignition coil 'j' primary control, short to plus causes include a bad boost pressure sensor or a vacuum leak in the system throttle position output, circuit high and exhaust bank 4 sensor 1 oxygen sensor signal, implausibly rich will delay your vw fault. |
28989 Possible Causes:
28989 vw fault code may be caused by one or more of the following:
- Fuel Composition Sensor Circuit Malfunction
- Engine Oil Temperature Sensor Malfunction
- Clutch Position Sensor Circuit Malfunction
- Injector Circuit Malfunction - Cylinders
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Timing Reference High Resolution Signal A Too Many Pulses
- Crankshaft Position Sensor A Circuit Malfunction
- O2 Sensor Heater Circuit Malfunction
What To Check After Fixing 28989 Code
- Inspect all the connections valve for pump - jet: cylinder 8 (3040), electrical malfunction
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns