P126F - Nitrogen Oxide Sensor Trailing Throttle Check Linear Lambda Signal Too Rich

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What does this mean?

P126F 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 P126F 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 P126F code

    Labor: 1.0

    The cost of diagnosing the P126F 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.

P126F Possible Symptoms

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

P126F 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.
OBDII Code P126F - Nitrogen Oxide Sensor Trailing Throttle Check Linear Lambda Signal Too Rich - Engine-Codes.com

P126F More Information

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P126F Information for specific makes

  • P126F BMW Nitrogen Oxide Sensor Trailing Throttle Check Linear Lambda Signal Too Rich
  • P126F FORD Fuel Injector 6 Input Circuit Malfunction
  • P126F MINI Nitrogen Oxide Sensor Trailing Throttle Check Linear Lambda Signal Too Rich

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