Engine-Codes - Generic - P126E

P126E - Nitrogen Oxide Sensor Trailing Throttle Check Binary Lambda Signal Too Rich

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?

P126E Possible Causes

  • Faulty Nitrogen Oxide (NOx) Sensor
  • Nitrogen Oxide (NOx) Sensor harness is open or shorted
  • Nitrogen Oxide (NOx) Sensor circuit poor electrical connection

How do I fix code P126E

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 connector's pins.

Cost of diagnosing the P126E code

Labor: 1.0

The cost of diagnosing the P126E code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P126E Meaning

The 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.

P126E More Information

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Information for specific makes

  • P126E BMW Nitrogen Oxide Sensor Trailing Throttle Check Binary Lambda Signal Too Rich
  • P126E FORD Fuel Injector 5 Input Circuit Malfunction
  • P126E MINI Nitrogen Oxide Sensor Trailing Throttle Check Binary Lambda Signal Too Rich

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