AutoCodes – Chevrolet – P11C2 Chevrolet

P11C2 Chevrolet Code - Intake Air Humidity Sensor Circuit Low Voltage

Quick Answer

The Powertrain Control Module (PCM) monitors the Intake Air Humidity Sensor signal. Common causes include Faulty Intake Air Humidity Sensor, Intake Air Humidity Sensor harness is open or shorted, Intake Air Humidity Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P11C2 Chevrolet indicates Intake Air Humidity Sensor Circuit Low Voltage.
Common causes: Common causes include Faulty Intake Air Humidity Sensor, Intake Air Humidity Sensor harness is open or shorted, Intake Air Humidity Sensor circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 25,361

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 28, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P11C2 Chevrolet 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 P11C2 Chevrolet - Intake Air Humidity Sensor Circuit Low Voltage - AutoCodes.com — P11C2 Chevrolet Code - Intake Air Humidity Sensor Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P11C2 Chevrolet?

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

How to Fix the DTC P11C2 Chevrolet?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code 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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P11C2 Chevrolet code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P11C2 Chevrolet code?

Need more information on how to fix the P11C2 Chevrolet code? Get Access to Factory Service Manuals

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P11C2 Chevrolet Code

1. What are the common symptoms of OBDII code P11C2 in a Chevrolet related to the Intake Air Humidity Sensor Circuit Low Voltage?

- Common symptoms include poor engine performance, rough idling, decreased fuel efficiency, and potential stalling.

2. What are the possible causes of the Intake Air Humidity Sensor Circuit Low Voltage code in a Chevrolet?

- Possible causes may include a faulty intake air humidity sensor, damaged wiring or connectors in the sensor circuit, or issues with the sensor's calibration.

3. How can I diagnose the Intake Air Humidity Sensor Circuit Low Voltage issue in my Chevrolet?

- You can diagnose the problem using a scan tool to read the OBDII code, visually inspect the sensor and its connections, and perform electrical tests to check for proper voltage and continuity.

4. Is it safe to continue driving my Chevrolet with the P11C2 code related to the Intake Air Humidity Sensor Circuit Low Voltage?

- It is not recommended to drive your vehicle with this code as it can lead to further damage to the engine and emissions system. It's best to address the issue promptly.

5. Can I reset the OBDII code P11C2 related to the Intake Air Humidity Sensor Circuit Low Voltage in my Chevrolet?

- While you can reset the code using a scan tool, it is important to address the underlying issue causing the code to prevent it from reoccurring.

6. How can I repair the Intake Air Humidity Sensor Circuit Low Voltage problem in my Chevrolet?

- Repair options may include replacing the intake air humidity sensor, repairing or replacing damaged wiring or connectors, and ensuring proper calibration of the sensor.

7. Are there any DIY tips for troubleshooting the P11C2 code in a Chevrolet?

- DIY tips include checking for loose or damaged connections, inspecting the sensor for any visible damage, and ensuring proper grounding of the sensor circuit.

8. Will replacing the intake air humidity sensor fix the OBDII code P11C2 in my Chevrolet?

- Replacing the sensor is a common solution for this code, but it's important to properly diagnose the issue to ensure that the sensor is the root cause of the problem.

9. How much does it typically cost to repair the Intake Air Humidity Sensor Circuit Low Voltage issue in a Chevrolet?

- The cost of repair can vary depending on the labor rates and parts prices, but replacing the intake air humidity sensor may cost between $100 to $200, excluding labor.

10. Can extreme weather conditions affect the Intake Air Humidity Sensor Circuit and trigger the P11C2 code in a Chevrolet?

- Yes, extreme humidity levels or exposure to moisture can potentially affect the sensor's readings and lead to the low voltage condition triggering the OBDII code P11C2.