TECHNICAL SERVICE BULLETIN
Incorrectly Illuminated MIL With DTCs P0420 And/Or P0430

25-2382
19 August
2025

This bulletin supersedes 25-2267. Reason for update: update the vehicles affected.
Model:
Ford
2021-2022 F-650/F-750

Engine: 7.3L

2020-2021 F-53 Motorhome/F-59 Commercial Stripped Chassis

Engine: 7.3L

2021-2022 E-Series

Engine: 7.3L

Markets: North American markets only
Issue: Some of the vehicles listed in the Model statement above may exhibit an incorrectly illuminated MIL with
DTCs P0420 and/or P0430 stored in the PCM. This may be due to the software in the PCM.
Action: For vehicles that meet all of the criteria in the Issue and Model statements, follow the Service Procedure to
reprogram the PCM.
Warranty Status: Eligible under provisions of New Vehicle Limited Warranty (NVLW)/Emissions Warranty/Service
Part Warranty (SPW)/Service Part New Vehicle (SPNV)/Extended Service Plan (ESP) coverage. Limits/policies/prior
approvals are not altered by a TSB. NVLW/Emissions Warranty/SPW/SPNV/ESP coverage limits are determined by
the identified causal part and verified using the OASIS part coverage tool.
Labor Times
Operation
No.

Description

Time

2021-2022 F-650/F-750: Retrieve DTCs, Reprogram The PCM And Perform The Catalyst
Drive Cycle Procedure (Do Not Use With Any Other Labor Operations)

252382A

0.8
Hrs.

2020-2021 F-53 Motorhome/F-59 Stripped Chassis, 2021-2022 E-Series: Retrieve DTCs,
Reprogram The PCM And Perform The Catalyst Drive Cycle Procedure (Do Not Use With Any
Other Labor Operations)

252382B

0.7
Hrs.

Repair/Claim Coding
Causal Part:

RECALEM

Condition Code: 04

Service Procedure
1. Reprogram the PCM using the latest software level of the Ford IDS scan tool.
2. Perform the Catalyst Drive Cycle Procedure. Refer to WSM, Section 303-14 > Description and Operation >
Electronic Engine Controls - System Operation and Component Description. Repeat the self-test
3. If P0420 and/or P0430 return, refer to the WSM, Section 309-00 for normal diagnostics. Repair as necessary
outside of this article.
NOTE: Advise the customer that this vehicle is equipped with an adaptive transmission shift strategy which
allows the vehicle's computer to learn the transmission's unique parameters and improve shift quality. When
the adaptive strategy is reset, the computer will begin a relearning process. This relearning process may
result in firmer than normal upshifts and downshifts for several days.

© 2025 Ford Motor Company
All rights reserved.

NOTE: The information in Technical Service Bulletins is intended for use by trained, professional technicians with the knowledge, tools, and
equipment to do the job properly and safely. It informs these technicians of conditions that may occur on some vehicles, or provides information
that could assist in proper vehicle service. The procedures should not be performed by "do-it-yourselfers". Do not assume that a condition
described affects your car or truck. Contact a Ford or Lincoln dealership to determine whether the Bulletin applies to your vehicle. Warranty Policy
and Extended Service Plan documentation determine Warranty and/or Extended Service Plan coverage unless stated otherwise in the TSB article.
The information in this Technical Service Bulletin (TSB) was current at the time of printing. Ford Motor Company reserves the right to supersede
this information with updates. The most recent information is available through Ford Motor Company's on-line technical resources.