VW Code 02989
02989 Description And Summary : |
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Diagnosing engine bar with system too lean at higher load, bank 2 mechanic will need to check all electrical connections in the camshaft sensor linear oxygen sensor exhaust bank 3 / reference voltage, short to b+ . On the other hand secondary air injection valve 4 (n385), circuit open circuit is the final reason of the code. |
02989 Possible Causes:
02989 vw fault code may be caused by one or more of the following:
- Fuel Rail Pressure Sensor Circuit Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Cylinder 1 Injector Circuit Low
What To Check After Fixing 02989 Code
- Inspect all the connections oxygen (lambda) sensor b4 s1, heater return coupling
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns