AutoCodes – Chevrolet – P0068 Chevrolet

P0068 Chevrolet 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 Chevrolet 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 61,969
How popular is this code, among other codes? Medium
Table of contents Created and updated by William Orellana on May 16, 2022
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Code P0068 Chevrolet 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 Chevrolet - Throttle Body Air Flow Performance - AutoCodes.com
P0068 Chevrolet Code - Throttle Body Air Flow Performance

What are the Possible Causes of the DTC P0068 Chevrolet?

  • 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 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0068 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 P0068 Chevrolet code?

Need more information on how to fix the P0068 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0068 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

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 Chevrolet Code

1. What are the common symptoms of OBDII code P0068 in a Chevrolet related to throttle body air flow performance?

- Common symptoms may include a reduction in engine power, rough idling, stalling, and poor acceleration.

2. What are some possible causes of OBDII code P0068 in a Chevrolet indicating throttle body air flow performance issues?

- Possible causes can include a faulty throttle body, a dirty or clogged air filter, a vacuum leak, or issues with the mass airflow sensor.

3. How can I diagnose the OBDII code P0068 in a Chevrolet related to throttle body air flow performance?

- Diagnosis typically involves checking the throttle body for proper operation, inspecting the air filter for cleanliness, and scanning for any other related trouble codes.

4. Is it safe to continue driving with OBDII code P0068 in a Chevrolet indicating throttle body air flow performance problems?

- It is not recommended to drive the vehicle with this code as it can lead to further engine damage or performance issues.

5. What are some repair tips for addressing OBDII code P0068 in a Chevrolet due to throttle body air flow performance concerns?

- Repair tips may include cleaning or replacing the throttle body, replacing the air filter, checking for vacuum leaks, and ensuring proper operation of the mass airflow sensor.

6. Can a DIY enthusiast fix OBDII code P0068 in a Chevrolet related to throttle body air flow performance issues?

- Depending on the underlying cause, some DIY enthusiasts may be able to address the issue by following repair guides and using appropriate tools.

7. How much does it typically cost to repair OBDII code P0068 in a Chevrolet indicating throttle body air flow performance problems?

- Repair costs can vary widely based on the specific issue, but they may range from a few hundred to over a thousand dollars, including parts and labor.

8. Will resetting the OBDII code P0068 in a Chevrolet clear up throttle body air flow performance issues?

- Resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing the throttle body air flow performance issue.

9. Are there any preventive maintenance steps to avoid encountering OBDII code P0068 in a Chevrolet due to throttle body air flow performance concerns?

- Regularly inspecting and replacing air filters, cleaning the throttle body, and addressing any engine performance issues promptly can help prevent this code from appearing.

10. Can a malfunctioning throttle body cause other OBDII trouble codes besides P0068 in a Chevrolet?

- Yes, a malfunctioning throttle body can lead to other trouble codes related to engine performance, air intake, or emissions systems in the vehicle.

Discuss the causes and fixes for P0068 Chevrolet OBDII Code

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