AutoCodes – Generic – P268A

P268A Code - Fuel Injector Calibration Not Learned/Programmed

Quick Answer

The control functions for the fuel injection system are integrated in the Engine Control Module (ECM). Common causes include Fuel injector flow rate programming. 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: P268A indicates Fuel Injector Calibration Not Learned/Programmed.
Common causes: Common causes include Fuel injector flow rate programming.
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 26,459

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 Jan 26, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P268A Description

The control functions for the fuel injection system are integrated in the Engine Control Module (ECM). Each injector's flow rate information and cylinder position are stored in the memory of both the Glow Plug Control Module (GPCM) and the ECM. The fuel injector flow rate programming must be done when any of the following procedures are performed: The ECM is replaced, the GPCM is replaced or any fuel injectors are replaced.
If the ECM does not communicate, the flow rate information can be retrieved from the GPCM. If both control modules fail to communicate, the fuel injector flow rate information, or Injection Quantity Adjustment (IQA) flow rate numbers, will need to be retrieved from each individual injector.

OBDII Code P268A - Fuel Injector Calibration Not Learned/Programmed - AutoCodes.com — P268A Code - Fuel Injector Calibration Not Learned/Programmed

What does this mean?

What are the Possible Causes of the DTC P268A?

Fuel injector flow rate programming

How to Fix the DTC P268A?

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 P268A 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.

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Information for Specific Makes

P268A Chevrolet — Fuel Injector Calibration Not Learned/Programmed
P268A GMC — Fuel Injector Calibration Not Learned/Programmed

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.