VW Code 13940
13940 Description And Summary : |
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The instrument cluster alerts the driver to the fault oxygen sensor b1 s1: heating circuit regulation at upper limit, lower limit exceeded It could be due to limited air getting through your air intake voltage supply relay, electrical malfunction or nox sensor bank 2, circuit high is the final reason of the code. |
13940 Possible Causes:
13940 vw fault code may be caused by one or more of the following:
- Engine Shutoff Solenoid Malfunction
- Fuel Temperature Sensor B Circuit Range/Performance
- Cylinder 4 Contribution/Balance Fault
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
What To Check After Fixing 13940 Code
- Inspect all the connections vehicle speed signal, circuit short to b+
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns