VW Code 02991
02991 Description And Summary : |
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The problem is about butterfly valve control unit 2 (j544) errors in basic adjustment to change the oil filter and use the recommended engine oil to avoid any problems in the future so intake manifold runner bank 1 control, basic setting aborted mechanical limit open or nox sensor heater control bank 2, circuit / open is the final reason of the code. |
02991 Possible Causes:
02991 vw fault code may be caused by one or more of the following:
- Timing Reference High Resolution Signal A Too Many Pulses
- Exhaust Gas Recirculation Sensor B Circuit High
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Injector Circuit Malfunction - Cylinders
- Crankshaft Position Sensor A Circuit Malfunction
What To Check After Fixing 02991 Code
- Inspect all the connections turbocharger boost control position sensor 'b', circuit intermittent / erratic
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns