P2693: Cylinder 8 Injector Data Incompatible

What it means

The flow calibration data programmed for cylinder 8 injector does not match the format expected by the controller software.

At a glance

• Usually lights the check-engine light

How it works

The engine controller uses individual injector flow calibration data to calculate fuel delivery. P2693 means the data assigned to the cylinder 8 injector does not match a format or version accepted by the controller.

Common causes

Most likely first.

1. Replacement injector has different part number than software expects
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 repair history to determine whether the fault followed work on the cylinder 8 injector.
2. Check the cylinder 8 injector's identification against the correct part and calibration requirements for the vehicle.
3. Inspect its connector and wiring for disturbed, damaged, or poorly seated terminals.
4. Use a scan tool that can access injector coding to read the cylinder 8 data and compare it with the controller's accepted format.
5. If the part and data are correct, verify controller software compatibility before changing its programming.

Common fixes

• Enter the correct compatible calibration data for the cylinder 8 injector.
• Replace a mismatched cylinder 8 injector with the specified compatible unit.
• Apply a supported controller software update or configuration if needed for the correct calibration format.

Can I keep driving?

If the engine feels normal, limit driving to gentle trips until the code is resolved; stop if it develops a severe misfire or major power loss. Incorrect cylinder 8 fueling can make the engine run unevenly and may worsen with continued use.