P11C4 - Intake Air Humidity Sensor Circuit Erratic

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

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

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.

Possible symptoms

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

P11c4 Description

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.
OBDII Code P11c4 - Intake Air Humidity Sensor Circuit Erratic - AutoCodes.com

P11C4 Information for specific makes

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Related Information

P11C4 Comments

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