P288B: Pacifica park-pawl performance and the 2017 hybrid update

Performance is not a component verdict

FCA includes P288B-00, park lock/pawl actuator circuit performance, in its 2017 Pacifica hybrid software case. Nearby entries distinguish park-pawl position sensing and actuator motor-current sensing. Those different observations should remain visible on the scan report; a performance code alone does not identify which part of the parking mechanism or its control circuit is defective.

Check the documented software branch

The bulletin addresses hybrid-controller software and permanent faults that may not clear correctly. Its correction requires both hybrid control processors plus confirmation of the PCM, electronic brake booster and ABS software. FCA warns that omitting the companion updates can cause vehicle malfunctions. Accordingly, the diagnostic question is not merely whether someone previously reflashed the vehicle, but whether the complete applicable module set was brought into agreement.

Verification needs the original complaint

The same release mentions very-cold no-start and a bump when the gasoline engine starts. These are separate complaints covered by the package, not proof that P288B caused either one. Check exact applicability and address additional faults before using the bulletin. A persistent or active park-actuator fault after the relevant update still requires its proper diagnostic procedure. Because the code concerns a parking function, do not use code deletion as assurance that the vehicle will remain secured; follow the vehicle’s parking instructions and arrange professional assessment if Park behavior is abnormal. This source supplies no direct actuator test voltage or universal replacement instruction.

Source and applicability

FCA 08-007-21 covers 2017 Chrysler Pacifica PHEV with the 3.6 L EH3 engine in North America and APAC (China), with coordinated module updates.

Manufacturer bulletin, page 1 · Manufacturer bulletin, page 2