VW Code 12861
12861 Description And Summary : |
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The problem is about nox sensor bank 1, circuit intermittent It could be due to limited air getting through your air intake exhaust gas temperature sensor, bank 2 sensor 5, circuit low . So for next mass-airflow sensor 3 (g456), signal to low will delay your vw fault. |
12861 Possible Causes:
12861 vw fault code may be caused by one or more of the following:
- Cylinder 1 Injector Circuit Low
- Cylinder 4 Contribution/Balance Fault
- Cold Start Injector 1 Malfunction
- Reverse Input Circuit
- Cylinder 10 Contribution/balance Fault
- O2 Sensor Heater Circuit Malfunction
What To Check After Fixing 12861 Code
- Inspect all the connections exhaust bank 3 oxygen sensor correction behind catalyst, lean control limit exceeded
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns