OBDII Code List

P11CB CHEVROLET - Nox Sensor 1 Performance Signal High

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

P11CB CHEVROLET Possible Causes

  • Faulty Nox Sensor 1
  • Nox Sensor 1 harness is open or shorted
  • Nox Sensor 1 circuit poor electrical connection
  • Intake System Leaks
  • Exhaust System Leaks

How do I fix code P11CB CHEVROLET

    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 P11CB CHEVROLET code

    Labor: 1.0

    The cost of diagnosing the P11CB CHEVROLET 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.

P11CB CHEVROLET Possible Symptoms

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


The Powertrain Control Module (PCM) monitors the Nox Sensor 1. The PCM sets the OBDII code when the Nox Sensor 1 is not to factory specifications.
OBDII Code P11CB CHEVROLET - Nox Sensor 1 Performance Signal High  - Engine-Codes.com

P11CB CHEVROLET More Information

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