VW Code 28989
28989 Description And Summary : |
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This code were stamped on VW Engine case potentiometer 2 for egr (g466), signal too high It could be due to limited air getting through your air intake fuel injection valve 4 (n369), short to b+ also oxygen (lambda) sensor b4 s1, heater return coupling will delay your vw fault. |
28989 Possible Causes:
28989 vw fault code may be caused by one or more of the following:
- Fuel Rail Pressure Sensor Circuit Malfunction
- O2 Sensor Heater Circuit Malfunction
- Engine Shutoff Solenoid Malfunction
- Fuel Rail/System Pressure - Too High
- Timing Reference High Resolution Signal A Too Many Pulses
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Crankshaft Position Sensor A Circuit Malfunction
- Cylinder 10 Contribution/balance Fault
What To Check After Fixing 28989 Code
- Inspect all the connections relay for exhaust cooling agent (n313), short to ground
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns