P0810: Grand Cherokee PHEV clutch control and recall sequencing

The hybrid transition is useful evidence

The source lists P0810-00, clutch-position control error, in a transmission-software case. Associated complaints include rough engine engagement, abrupt EV-to-hybrid transitions when battery charge is low and, in some cases, loss of propulsion with a service-transmission warning. Record when the event occurs; that context is more useful than treating the code as a generic worn-clutch diagnosis.

Check the recall before a standalone update

The bulletin directs completion of the 04B recall instructions before proceeding and says the TCM update is covered by that recall when it remains incomplete. A workshop should therefore establish the VIN’s recall status and repair history, not simply select a flash based on P0810. A key cycle restoring operation is a reported behavior, not proof that the underlying condition has been repaired.

Keep the repair professional and bounded

The application requires the specified hybrid engine and transmission, and unrelated faults must be investigated. The source prescribes a TCM update under the proper hybrid-service precautions; it does not publish clutch travel limits, an adaptation shortcut or a universal transmission-replacement rule. After service, verify the applicable recall/update completion and reassess the original transition or propulsion complaint. Continuing or recurrent propulsion loss requires professional attention. This historical case should not be applied to a gasoline-only Grand Cherokee or another transmission merely because the scan tool shows the same base code.

Source and applicability

FCA 21-030-24 concerns specified 2023 Grand Cherokee WL PHEV ECX vehicles with the 8P75PH DFY transmission.

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