P25B4 · Manufacturer communications

FORD, LINCOLN · 2025-07-29

Some 2020-2023 Explorer, 2022-2023 F-150, and 2023-2024 Expedition/Navigator vehicles equipped with a 2.3L/3.5L EcoBoost engine may exhibit may exhibit an illuminated malfunction indicator lamp (MIL) and/or powertrain malfunction (wrench) indicator with diagnostic trouble codes (DTCs) P25B3, P25B4, P25B5, P25B6, P2ABA, P2ABB, P2ABC, P2AB7, P2AB8, and/or P2AB9 stored in the powertrain control module (PCM). This may be due to a concern with the turbocharger wastegate. To correct the condition, follow the applicable diagnostic pinpoint tests (PPT) steps found in Workshop Manual (WSM), Section 303-04 and repair as necessary.

FORD · 2024-04-24

Some 2021-2023 Bronco vehicles equipped with a 2.7L or 3.0L engine may exhibit an illuminated MIL with DTC P25B4, P25B6, and/or P0299 stored in the powertrain control module (PCM). This may be due to a loose nut on the turbo actuator arm causing an under boost condition

FORD, LINCOLN · 2023-11-14

Some 2020-2023 Explorer vehicles equipped with a 2.3L EcoBoost engine, 2022-2023 F-150 vehicles equipped with a 3.5L EcoBoost engine, and 2023-2024 Expedition/Navigator vehicles may exhibit an illuminated malfunction indicator lamp (MIL) and/or powertrain malfunction (wrench) indicator with diagnostic trouble codes (DTCs) P25B3, P25B4, P25B5, P25B6, P2ABA, P2ABB, P2ABC, P2AB7, P2AB8, and/or P2AB9. This may be due to the software in the powertrain control module (PCM). To correct this condition, follow the Service Procedure to reprogram the PCM.

PORSCHE · 2022-12-19

Technical information for a check engine warning light is active in conjunction with fault memory entry “P25B400” in the DME control unit

PORSCHE · 2022-09-28

Instructions on advanced technical information - DME Fault P25B400 (008403) “Wastegate, turbocharger bank 1 – stuck closed

FORD · 2022-04-11

Some 2021-2022 Ranger/Bronco vehicles equipped with a 2.3L EcoBoost engine built on or after 14-Dec-2021 and 2022 Explorer vehicles equipped with a 2.3L EcoBoost engine and built on or after 14-Dec-2021, may exhibit a lack of power with an illuminated malfunction indicator lamp (MIL) with diagnostic trouble code (DTC) P25B4 stored in the powertrain control module (PCM). To correct the condition, clear the DTC and road test the vehicle under load until the vehicle reaches operating temperature. If the DTC repeats, the turbocharger will need to be replaced. For claiming use causal part 6K682 and applicable labor times found in Section 09 of the Service Labor Time Standards (SLTS) Manual. If the DTC does not repeat, release the vehicle to the customer.

TOYOTA · 2022-02-21

TT: Some 2022 MY Tundra vehicles, may experience a MIL ON condition with one or more of the following DTC(s): ?DTC P024300 Turbocharger/Supercharger Wastegate Actuator "A" ?DTC P024700 Turbocharger/Supercharger Wastegate Actuator "B" ?DTC P25B372 Turbocharger/Supercharger Wastegate "A" Actuator Stuck Open ?DTC P25B473 Turbocharger/Supercharger Wastegate "A" Actuator Stuck Closed ?DTC P25B572 Turbocharger/Supercharger Wastegate "B" Actuator Stuck Open ?DTC P25B673 Turbocharger/Supercharger Wastegate "B" Actuator Stuck Closed ?DTC P02351C Turbocharger/Supercharger Boost Sensor "A" Circuit Voltage Out of Range

FORD, LINCOLN · 2022-02-11

Some 2019-2022 Edge/Nautilus, 2020-2022 Escape/Corsair, and 2021-2022 Bronco Sport vehicles equipped with a 2.0L EcoBoost or 2.3L EcoBoost may exhibit a lack of power with an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTC) P02AB, P0243, P0299, P25B3, P25B4, P2AB7, P2AB8 and/or P2AB9. This may be due to an inoperative wastegate actuator, missing wastegate actuator e-clip or non-visible damage to the actuator rod. If the diagnostic procedures lead to replacement of the turbocharger assembly, note that a lower level service component has been released K2GZ-9G488-B for Edge/Nautilus/Escape/Corsair/Bronco Sport for service to replace the actuator, actuator rod and both e-clips instead of a complete turbocharger assembly. When replacing the wastegate actuator,…

FORD, LINCOLN · 2021-10-04

Some 2019-2021 Edge/Nautilus/Ranger, 2020-2021 Escape/Corsair/Explorer, and 2021 Bronco Sport vehicles equipped with a 2.0L/2.3L EcoBoost may exhibit a lack of power with an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTC) P02AB, P0243, P0299, P1464, P25B3, P25B4, P2AB7, P2AB8 and/or P2AB9. This may be due to an inoperative wastegate actuator, missing wastegate actuator e-clip or non-visible damage to the actuator rod. A lower level service component has been released, K2GZ-9G488-B for Edge/Nautilus/Escape/Corsair/Bronco Sport vehicles and LB5Z-9G488-B for Explorer/Ranger vehicles, for service to replace the actuator, actuator rod and both e-clips. When replacing the wastegate actuator, it is important to replace all parts in the service kit. Turbocharger…

FORD, LINCOLN · 2021-01-05

Some 2019-2020 Edge/Nautilus/Ranger, 2020 Escape and 2020-2021 Corsair/Explorer vehicles equipped with a 2.0L/2.3L EcoBoost may exhibit a lack of power with an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) P02AB, P0243, P0299, P1464, P25B3, P25B4, P2AB7, P2AB8 and/or P2AB9. This may be due to a missing wastegate actuator e-clip. A lower level service component has been released, K2GZ-9G488-B for Edge/Nautilus/Escape/Corsair vehicles and LB5Z-9G488-B for Explorer/Ranger vehicles, for service to replace the actuator, actuator rod and both e-clips. Turbocharger replacement is not necessary for missing wastegate actuator e-clips.

AUDI · 2019-09-18

This bulletin contains a software update for DTC P25B400.

AUDI · 2019-08-09

This bulletin contains a software update for DTC P25B400.

AUDI · 2018-08-24

This bulletin contains a software update for DTC P25B400.

FORD · 2017-03-14

2017 F150 AND RAPTOR VEHICLES EQUIPPED WITH A 3.5L GTDI ENGINE MAY HAVE LOSS OF POWER/PERFORMANCE WITH DTC'S P0244,P25B4,P0248 AND P25B6. THIS MAY BE CAUSED BY WASTEGATE CONTROL ACTUATOR THAT IS OUT OF ADJUSTMENT. BEFORE ATTEMPTING TO REPLACE ANY TURBO CHARGER PARTS. REFER TO WORKSHOP MANUAL(WSM), SECTION 303-04F WASTEGATE CONTROL ADJUSTMENT. FOR CLAIMING, USE CAUSAL PART FOR 9G488 AND APPLICABLE LABOR OPERATIONS IN SECTION 10 OF THE SERVICE LABOR TIME STANDARDS (SLTS) MANUAL.