P2696: Injector Data Incompatible

What it means

Generic counterpart to the cylinder-specific incompatibility codes. The injector calibration data set as a whole does not match the controller software.

At a glance

• Usually lights the check-engine light

How it works

The engine controller uses calibration data for the injector set to account for fuel-flow differences. P2696 indicates that the overall injector data set is not compatible with the format or software version the controller expects, rather than identifying one cylinder.

Common causes

Most likely first.

1. Replacement injector set incompatible with software version
2. Calibration code format does not match controller version

Symptoms

• Check-engine light
• Possible rough running or reduced power

How to diagnose it

1. Review freeze-frame data and service history for recent replacement of multiple injectors or controller programming.
2. Check that the installed injector set is specified for the vehicle's controller and that all injectors have the required calibration identifiers.
3. Inspect injector connectors and harness sections disturbed during the replacement for loose or damaged terminals.
4. Use a capable scan tool to read the injector calibration set and identify missing, incorrectly entered, or unsupported data.
5. Confirm controller software compatibility with the injector set before correcting the calibration or changing programming.

Common fixes

• Enter the complete correct injector calibration set using a compatible scan tool.
• Replace injectors that are incompatible with the vehicle's specified set.
• Update or configure the controller software if a supported change is required for that set's calibration format.

Can I keep driving?

If the engine runs normally, drive gently and limit unnecessary trips until the data mismatch is corrected. Rough running or reduced power calls for avoiding heavy loads, since incorrect fueling across the set can affect engine operation.