P126A - Nitrogen Oxide Sensor Oxygen Sensor Before Catalytic Converter Plausibility Correlation Fault
P126A Possible Causes
- Faulty Nitrogen Oxide (NOx) Sensor
- Nitrogen Oxide (NOx) Sensor harness is open or shorted
- Nitrogen Oxide (NOx) Sensor circuit poor electrical connection
First diagnose P126A code
Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded terminals.
Cost of diagnosing the P126A code
Labor: 1.0The cost of diagnosing the P126A code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
P126A Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P126a DescriptionThe Engine Control Module (ECM) monitors the Nitrogen Oxide (NOx) Sensor. The ECM sets the OBDII code when the Nitrogen Oxide (NOx) Sensor is not to factory specifications.
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P126A Information for specific makes
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