AutoCodes – GMC – P0068 2016 GMC Sierra

P0068 2016 GMC Sierra Code - Throttle Body Air Flow Performance

Quick Answer

The Engine Control Module (ECM) compares actual air flow based on Throttle Position (TP) to a calculated air flow based on the Manifold Absolute Pressure (MAP) sensor, and Mass Air Flow (MAF). Common causes include Air leak between the Mass Air Flow (MAF) sensor and Throttle Body, Restricted Air Filter, Dirty Throttle Body. 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: P0068 2016 GMC Sierra indicates Throttle Body Air Flow Performance.
Common causes: Common causes include Air leak between the Mass Air Flow (MAF) sensor and Throttle Body, Restricted Air Filter, Dirty Throttle Body.
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 257

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 16, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
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Code P0068 2016 GMC Sierra Description

The Engine Control Module (ECM) compares actual air flow based on Throttle Position (TP) to a calculated air flow based on the Manifold Absolute Pressure (MAP) sensor, and Mass Air Flow (MAF). The Diagnostic Trouble Code (DTC) will be set if the ECM detects that the actual air flow rate is greater than the calculated air flow.

OBDII Code P0068 2016 GMC Sierra - Throttle Body Air Flow Performance - AutoCodes.com — P0068 2016 GMC Sierra Code - Throttle Body Air Flow Performance

What does this mean?

What are the Possible Causes of the DTC P0068 2016 GMC Sierra?

Air leak between the Mass Air Flow (MAF) sensor and Throttle Body
Restricted Air Filter
Dirty Throttle Body
Dirty Mass Air Flow sensor
Faulty Mass Air Flow sensor
Faulty Manifold Absolute Pressure (MAP)
Faulty Throttle Body

How to Fix the DTC P0068 2016 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 P0068 2016 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 P0068 2016 GMC Sierra code?

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Need Help with the Code?

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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 P0068 2016 GMC Sierra Code

1. What does OBDII code P0068 on a 2016 GMC Sierra indicate?

The P0068 code refers to a potential issue with the throttle body air flow performance.

2. What are the common symptoms of OBDII code P0068 in a GMC Sierra?

Common symptoms include reduced engine power, rough idling, stalling, and poor acceleration.

3. What are the possible causes of OBDII code P0068 in a 2016 GMC Sierra?

Potential causes include a faulty throttle body, dirty air filter, vacuum leaks, or a malfunctioning mass air flow sensor.

4. How can I diagnose the OBDII code P0068 on my GMC Sierra?

Diagnosis typically involves checking the throttle body for obstructions, inspecting the air filter, examining vacuum hoses, and testing the mass air flow sensor.

5. Can I continue driving my GMC Sierra with OBDII code P0068?

It is not recommended to drive the vehicle with the P0068 code present, as it can lead to further engine damage if left unresolved.

6. How can I repair OBDII code P0068 in my 2016 GMC Sierra?

Repair options may include cleaning or replacing the throttle body, replacing the air filter, fixing vacuum leaks, or replacing the mass air flow sensor.

7. Is it possible to clear the P0068 code on a GMC Sierra without fixing the underlying issue?

While clearing the code may temporarily turn off the warning light, it is crucial to address the root cause to prevent ongoing performance issues.

8. Will resetting the vehicle's computer system resolve the OBDII code P0068?

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

9. How much does it cost to repair OBDII code P0068 on a 2016 GMC Sierra?

The cost of repairs for the P0068 code can vary depending on the specific issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

10. Can a DIY enthusiast fix OBDII code P0068 in a GMC Sierra?

While some basic maintenance tasks related to the P0068 code can be done by a DIY enthusiast, diagnosing and repairing more complex issues may require professional expertise.