The electrically erasable & programmable read only memory (EEPROM) memorizes fuel injector flow rate information. If the engine control module (ECM) detects fuel injector flow rates are not programmed into the ECM or an error in the programmed fuel injector flow rates, this DTC will set.

The ignition switch is ON.

Either of following condition is met:

DTC P268A is a Type A DTC.

DTC P268A is a Type A DTC.

Inspect for any recent engine mechanical repairs. An incorrectly installed IAT sensor 2 will cause this DTC to set.

Schematic Reference

Engine Controls Schematics

Connector End View Reference

Component Connector End Views

Electrical Information Reference

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Important: Determine the ambient temperature by using an accurate thermometer.

1. Review the Display Injector Flow Rates parameter with a scan tool. All cylinders should be programmed with a flow rate number. The ECM should be programmed with the same flow rate numbers for the corresponding cylinders.

⇒	If flow rate numbers are not present, refer to Fuel Injector Flow Rate Programming.

2. Engine running, observe the DTC information with a scan tool. DTC P268A should not set.
3. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.