AutoCodes – GMC – P00C7 2018 GMC Sierra

P00C7 2018 GMC Sierra Code - Intake Air Pressure Measurement System Multiple Sensors Not Plausible

Quick Answer

The Intake Air Pressure Measurement System consists of (2) sensors, the Barometric Pressure (BARO) Sensor, and the Manifold Absolute Pressure (MAP) Sensor. Common causes include Faulty Barometric Pressure (BARO) Sensor, Barometric Pressure Sensor harness is open or shorted, Barometric Pressure 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
P00C7 2018 GMC Sierra indicates Intake Air Pressure Measurement System Multiple Sensors Not Plausible.
Common causes
Common causes include Faulty Barometric Pressure (BARO) Sensor, Barometric Pressure Sensor harness is open or shorted, Barometric Pressure 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 410
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 15, 2022
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Code P00C7 2018 GMC Sierra Description

The Intake Air Pressure Measurement System consists of (2) sensors, the Barometric Pressure (BARO) Sensor, and the Manifold Absolute Pressure (MAP) Sensor. The Diagnostic Trouble Code (DTC) will be set when the ECM detects an inconsistency between pressure sensors in the induction system in which a particular sensor cannot be identified as the failed sensor. The difference between them is greater than 10 kPa (1.5 PSI).
OBDII Code P00C7 2018 GMC Sierra - Intake Air Pressure Measurement System Multiple Sensors Not Plausible - AutoCodes.com
P00C7 2018 GMC Sierra Code - Intake Air Pressure Measurement System Multiple Sensors Not Plausible

What are the Possible Causes of the DTC P00C7 2018 GMC Sierra?

  • Faulty Barometric Pressure (BARO) Sensor
  • Barometric Pressure Sensor harness is open or shorted
  • Barometric Pressure Sensor circuit poor electrical connection
  • Faulty Manifold Absolute Pressure (MAP) Sensor
  • Manifold Absolute Pressure Sensor harness is open or shorted
  • Manifold Absolute Pressure Sensor circuit poor electrical connection

How to Fix the DTC P00C7 2018 GMC Sierra?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P00C7 2018 GMC Sierra 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 P00C7 2018 GMC Sierra code?

Need more information on how to fix the P00C7 2018 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P00C7 2018 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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 P00C7 2018 GMC Sierra Code

1. What does OBDII code P00C7 mean for a 2018 GMC Sierra?

The code P00C7 indicates a problem with the Intake Air Pressure Measurement System, specifically relating to multiple sensors providing implausible data.

2. What are the common symptoms of OBDII code P00C7 in a 2018 GMC Sierra?

Common symptoms of code P00C7 may include reduced engine performance, rough idling, stalling, and potential issues with acceleration.

3. What are the possible causes of OBDII code P00C7 in a 2018 GMC Sierra?

Causes of code P00C7 can include faulty sensors, wiring issues, a malfunctioning ECM (Engine Control Module), or a problem with the intake air pressure sensor.

4. How can I diagnose the Intake Air Pressure Measurement System issue causing OBDII code P00C7 in my 2018 GMC Sierra?

Diagnosing the problem may involve checking the intake air pressure sensor, inspecting the sensor wiring for damage, and scanning for any other related trouble codes.

5. Is it safe to continue driving my 2018 GMC Sierra with OBDII code P00C7 present?

It is not recommended to drive your vehicle with an unresolved P00C7 code, as it can lead to further engine issues and potential safety concerns.

6. Can I repair OBDII code P00C7 in my 2018 GMC Sierra myself?

While some DIY enthusiasts may attempt to address this code, it is advisable to seek professional help for proper diagnosis and repair to ensure the issue is resolved correctly.

7. Will resetting the OBDII system clear the P00C7 code in my 2018 GMC Sierra?

Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing code P00C7 is not fixed, the code is likely to reappear.

8. How much does it typically cost to repair OBDII code P00C7 in a 2018 GMC Sierra at a repair shop?

Repair costs for code P00C7 can vary depending on the exact cause of the issue, but expect to pay for diagnostic time, parts replacement, and labor charges.

9. Can extreme weather conditions affect the Intake Air Pressure Measurement System and trigger OBDII code P00C7 in a 2018 GMC Sierra?

Extreme weather conditions, such as high humidity or temperature fluctuations, could potentially impact sensor performance and trigger the P00C7 code.

10. Are there any preventive maintenance tips to avoid encountering OBDII code P00C7 in a 2018 GMC Sierra?

Regularly inspecting and maintaining the intake air pressure system components, ensuring proper sensor function, and addressing any issues promptly can help prevent code P00C7 from appearing.

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