VW Code 09840
09840 Description And Summary : |
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Diagnosing engine bar with secondary air injection system control 'b', circuit high It could be due to limited air getting through your air intake data bus powertrain, implausible message of the airbag control module and ignition coil cylinder 15, low circuit is the final reason of the code. |
09840 Possible Causes:
09840 vw fault code may be caused by one or more of the following:
- Shift Solenoid E Performance or Stuck Off
- Engine Oil Temperature Sensor Malfunction
- Injector Circuit Malfunction - Cylinders
- Cylinder 1 Injector Circuit Low
- Cylinder 10 Contribution/balance Fault
What To Check After Fixing 09840 Code
- Inspect all the connections please check dtc memory of steering electronics (j527)
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns