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TECHNICAL SERVICE BULLETIN 24-2115
2.7L EcoBoost - Illuminated MIL With DTC P0420 And/Or P0430 23 April 2024
This bulletin supersedes 22-2260. Reason for update: revise the vehicle applications and Service Procedure
Model:
Ford Engine: 2.7L EcoBoost
2018-2020 F-150
Issue: Some 2018-2020 F-150 vehicles equipped with a 2.7L EcoBoost may exhibit an illuminated MIL with DTC
P0420 and/or P0430 stored in the PCM. This may be due to calibration and controls sensitivity. To correct the
condition, follow the Service Procedure to perform the catalyst stabilization drive cycle.
Action: Follow the Service Procedure to correct the condition if the vehicle meets the following criteria:
+ 2018-2020 F-150
* 2.7L EcoBoost engine
+ Illuminated MIL with DTC P0420 and/or P0430 stored in the PCM
Parts
Service Part Claim Package Order Number in D ipti
Number Quantity Quantity Package escription
W520514-S440 Catalytic Converter Nuts
W520114-S442 Transmission Support Crossmember Nuts
W714418-S439 Transmission Support Crossmember Bolts
W709771-S440 Transmission Mount Nuts
W711140-S901 3 3 1 Transmission Support Insulator Bolts (Rear
Wheel Drive Only)
W718353-S900 4 1 4 Transmission Support Insulator Bolts
(4x4/All-Wheel Drive Only)
W715131-8442 Transmission Fluid Cooler Tube Bolts
FL3Z-5C226-A Catalytic Converter Gasket
wazsezi2c | 1 ft Tt Lett Catalytic Converter Assembly
wszse2i2k | 1 | tJ Right Catalytic Converter Assembly
Fisze775-D | 1 | 1 [1 [Self Adhesive Heat Shield Material
Parts - Parts To Inspect And Replace Only If Necessary
Service Part . . Package Order | Number in age
LX6Z-7D285- | Only If Necessary Only If 41 wet .
A (2 possible) Necessary Transmission Fluid Band Seal
5L7Z-7J324-A | Only If Necessary Only If 2 wo . . .
XT-12-QULV | Only If Necessary Only If Motorcraft® MERCON® ULV Automatic
Necessary Transmission Fluid
VC-13-G Only If Necessary Only If Motorcraft® Yellow Concentrated
Necessary Antifreeze/Coolant (All Markets Except
Canada)

ane er] Se, | SS
Necessary Antifreeze/Coolant (Canada Only)
Claim Quantity refers to the total number of individual pieces required to repair the vehicle.
Package Order Quantity refers to the amount of the service part number required to repair the vehicle.
Number In Package refers to the number of individual pieces included in a service part number package.
Only If Necessary indicates the part is not mandatory.
Warranty Status: Eligible under provisions of New Vehicle Limited Warranty (NVLW)/Emissions Warranty/Service
Part Warranty (SPW)/Special Service Part (SSP)/Extended Service Plan (ESP) coverage. Limits/policies/prior
approvals are not altered by a TSB. NVLW/Emissions Warranty/SPW/SSP/ESP coverage limits are determined by
the identified causal part and verified using the OASIS part coverage tool.
Labor Times
en Lm
Procedure Time
Repair/Claim Coding
Service Procedure
NOTE: Perform the catalyst stabilization drive cycle one time only. If the vehicle exhibit this condition again,
proceed with the replacement of the catalytic converter(s).
1. Perform pinpoint tests steps HF1-HF6. Refer to the PC/ED Manual.
2. Is the concern still present?
(1). Yes - proceed to Step 3.
(2). No - this article does not apply.
3. Retrieve OBD Mode 6 Data from the FDRS and record oxygen storage values from both banks.
4. Perform the following catalyst stabilization drive cycle.
(1). Warm up the engine to its normal operating temperature.
(2). Identify an appropriate route to allow speeds around 65 mph (105 km/h).
(3). From 30 mph (48 km/h) or slower, accelerate at WOT until the vehicle reaches 65 mph (105 km/h).
(4). Perform periodic light acceleration/deceleration events for 5 minutes, driving alternately between 50 mph and
65 mph (80 km/h and 105 km/h).
(5). Reduce speed to under 30 mph (48 km/h).
(6). Repeat the WOT with periodic acceleration/deceleration events 3-4 times.
(7). Park the vehicle and let the engine idle for 1 hour.
5. Clear DTC P0420 and/or P0430 stored in the PCM. This resets the Mode 6 data to zero.
6. Drive the vehicle at 55-65 mph (88-105 km/h) for 15 minutes.
7. Run a catalyst monitor drive cycle. Refer to pinpoint test HF11 > On Board Diagnostics (OBD) Drive Cycle.
8. Retrieve OBD Mode 6 Data after the catalyst oxygen storage values have been populated. Have the oxygen
storage values decreased from what was recorded in Step 3 and are they less than 0.5 on either bank?
(1). Yes - repair is complete.
(2). No - replace the catalytic converter(s) on the affected bank(s). Refer to the WSM, Section 309-00 > Exhaust
System > Removal and Installation > Catalytic Converter.

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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.