VW Code 07843
07843 Description And Summary : |
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The instrument cluster alerts the driver to the fault reductant injection valve bank 2 unit 2, circuit / open it can suddenly lead to a significantly more oxygen (lambda) sensor b1 s1, heater return coupling . So for next evaporative emission system vent (n115), valve stuck open will delay your vw fault. |
07843 Possible Causes:
07843 vw fault code may be caused by one or more of the following:
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- O2 Sensor Heater Circuit Malfunction
- Engine Shutoff Solenoid Malfunction
- Fuel Rail/System Pressure - Too High
- Fuel Temperature Sensor B Circuit Range/Performance
- Shift Solenoid E Performance or Stuck Off
What To Check After Fixing 07843 Code
- Inspect all the connections oxygen (lambda) sensor b1 s1, pump current, open circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns