Mitsubishi Motors North America, Inc.

SERVICE - DEALER PDI - CAMPAIGN BULLETIN
(no customer notification)

SUBJECT:

No: SC-26-001

SERVICE / DEALER PDI CAMPAIGN
ECU REFLASH

Version: 3
Reason for change:
Eligibility Clarification
Date:

May 29, 2026

Mitsubishi Motors US and Puerto Rico Dealer Principals, General Managers, Sales
Managers, Service Managers, Service Advisors, Parts Managers, Technicians and
Warranty Administrators

TO:

AFFECTED VEHICLES
2026 Outlander with 4B40 Gen 2 Engine

Dealers must check 2026 Outlander VINS on the Warranty Superscreen
for eligibility. If eligible, perform ECU reprogramming as shown below.

GROUP
14 – Cooling
CUSTOMER COMPLAINT
N/A
PURPOSE
MMNA has received reports from the field of customer concerns of the check engine light
(CEL) on, with P0128-00 stored in the Engine Control Unit (ECU). If a CEL is present,
Advanced Driver Assistance Systems (ADAS) may be restricted or disabled.
REMEDY
Ensure the MUT3-SE software number is at #978, and perform the procedure below:

© Copyright Mitsubishi Motors North America, Inc.
5/22/2026

1 of 2

(5541/PDI2604007)

Caution during reprograming:
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Write down all the customer’s electrical device settings such as A/C and radio before
reprogramming and restore them after reprogramming
Turn off all electrical devices to minimize the vehicle's electrical load. Also use an
external power source to ensure that the vehicle battery maintains the specified
voltage during reprogramming.
Connect the MUT3-SE to an AC power source to prevent internal battery discharge.
Before using, make sure the USB cable and MUT3-SE main harness are not damaged.
Do not perform maintenance work in the engine room during reprogramming. If the
connection between the ECU and Electronic Total Automotive Control System
(ETACS) is lost, the cooling fan operates as fail-safe.

Model

Outlander

New SW Part
No./Ver.

Data No.

Target HW
Part No.

Target SW
Part No./Ver.

23761W36.1PN

23761W361P

23761W277P

23761W36.2PN

23761W362P

23761W278P

23761W36.3PN

23761W363P

23761W36.4PN

23761W364P

23761W36.5PN

23761W365P

23761W281P

23761W36.6PN

23761W366P

23761W282P

23703W013P

Remarks

2WD CRUISE CONTROL
2WD ADAPTIVE CRUISE
CONTROL

23761W279P

2WD MI-PILOT ASSIST

23761W280P

4WD CRUISE CONTROL
4WD ADAPTIVE CRUISE
CONTROL
4WD MI-PILOT ASSIST

WARRANTY
Op Code

C2601P01

Operation
Code
A

Reprogram of
Engine ECU software

605

Cause
Code B

Nature
Code C

16

B

Nature

1

Qty
Time

Work

0.3 H

Disclaimer
NOTE: The information contained in this document is intended for use by trained, professional technicians with the
knowledge to properly perform diagnosis and repairs on Mitsubishi vehicles, using Mitsubishi Motors approved tools
and equipment. It informs service technicians about conditions that could occur in certain vehicles and provides
information that could assist in proper vehicle diagnosis, service, or repair. It does not indicate that a defect is present
in any vehicle referenced in this document nor does it imply that the described repairs are covered under warranty. DO
NOT assume that a symptom or condition, or a described cause of a symptom or condition, affects any particular
vehicle or groups of vehicles, or that a described repair applies to any particular vehicle or groups of vehicles. There
can be multiple causes resulting in the same or similar symptoms or conditions described in this document and
trained professional service technicians must use their diagnostic skills to make evaluations on a case-by-case basis.
The information contained in this document does not guarantee warranty coverage nor does it extend the vehicle’s
warranty in any way.

© Copyright Mitsubishi Motors North America, Inc.
5/22/2026

2 of 2

(5541/PDI2604007)