Engine-Codes - GMC - P0068 GMC

P0068 GMC Code - Throttle Body Air Flow Performance

- Code Popularity: 15,571 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
Table of contents
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What are the Possible Causes of the DTC P0068 GMC?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • 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
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How to Fix the DTC P0068 GMC?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P0068 GMC code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Lack/Loss of power
  • Engine rough idle

What Does the P0068 GMC Code Mean?

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.

P0068 GMC Code - Throttle Body Air Flow Performance

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