Engine-Codes - Chevrolet - P11C4 CHEVROLET

P11C4 CHEVROLET - Intake Air Humidity Sensor Circuit Erratic

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

P11C4 CHEVROLET Possible Causes

  • Faulty Intake Air Humidity Sensor
  • Intake Air Humidity Sensor harness is open or shorted
  • Intake Air Humidity Sensor circuit poor electrical connection

How do I fix code P11C4 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.

Tech Notes

The Intake Air Humidity Sensor is part of the 8-Pin Mass Air Flow, Humidity, BARO and Intake Air Temperature 1 and 2 Sensor.

Cost of diagnosing the P11C4 CHEVROLET code

Labor: 1.0

The cost of diagnosing the P11C4 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.

Possible Symptoms

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

P11C4 CHEVROLET Meaning

The Powertrain Control Module (PCM) monitors the Intake Air Humidity Sensor signal. The PCM sets the OBDII code when the Intake Air Humidity Sensor is not to factory specifications.

P11C4 CHEVROLET More Information

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