CUSTOMER SATISFACTION CAMPAIGN
V2403
2022-2024 S-SERIES P2201 P20EE ECU AND
DCU CALIBRATION UPDATE
RECALL NO: V2403
DATE: 7-16-2024
REFERENCE: CB24-L-001

AFFECTED VEHICLES:

2022 – 2024MY N-Series Vehicles Equipped with 5.2L (4HK1) Diesel
Engines and Option (IE1) 4-Wheel Disc Brakes

Note: Refer to the appropriate Vehicle Identification Number
in the warranty system to determine vehicle eligibility.
CONDITION:

We have determined that certain 2022 – 2024MY Hino S-Series vehicles
equipped with 5.2L (4HK1) diesel engines and option (IE1) 4-wheel disc
brakes were built with an Engine Control Module (ECM) and Diesel
Exhaust Fluid Control Unit (DCU) containing an On Board Diagnostic
(OBD) calibration error for Diagnostic Trouble Codes (DTC) P2201 NOx
Sensor Circuit Performance Sensor 1 and P20EE Diesel Exhaust Fluid
(DEF) System NOx Trap Low Efficiency.

CORRECTION:

Consistent with the table found in Step 2 of the Service Procedure below,
Hino dealers are to reprogram the ECM and/or the DCU with the corrected
service calibrations. This service will be performed free of charge.

VEHICLES INVOLVED:

Involved are certain 2022 – 2024MY Hino S-Series vehicles equipped with
5.2L (4HK1) diesel engines and option (IE1) 4-wheel disc brakes.

SERVICE PROCEDURE:
1. Look up the VIN in the Dealer Connect System (DCS) and
confirm the vehicle is affected by this campaign.
2. Using the Isuzu Diagnostic Service System (IDSS) version

15.5.8. or later, check the ECM and DCU calibration part
numbers. If the calibration part numbers do NOT match the
calibration numbers listed in the table below, reprogram both the
ECM and the DCU. However, if only one calibration part number
does not match, only reprogram the corresponding module.

NOTE: If the ECM and DCU are already calibrated to the
calibration numbers above and DTC P2201 and/or P20EE are
still setting, follow the Intermittent Conditions diagnostics in the
applicable Workshop Manual. Ensure that DTC P2201 and/or
P20EE are cleared after the ECM and/or the DCU have been
reprogrammed.
NOTE: If any DTCs other than DTC P2201 and/or P20EE are
found, make a note on the RO and consult with the customer.
The repairs associated with DTCs other than DTC P2201 and/or
P20EE are not covered by this campaign (though the repair
may still be covered under the New Vehicle Warranty).

3. Proceed to Applying the Campaign Label.
APPLYING THE CAMPAIGN LABEL:
4. Using a ball-point pen, fill in a campaign label with Campaign
Number V2403, Hino dealer code, and repair date.
5. Affix the campaign label onto the driver's side B-pillar.

CAMPAIGN CLAIM INFORMATION:
Refer to the Hino ICS Warranty Manual for details on Campaign
Claim Submission. Submit only one claim as indicated below.
Reimbursable in accordance within the terms and policies of the
Hino limited warranties.
a) Claim Type: CR
b) Recall No: V2403
c) Labor charge: 0.8
*Includes 0.1 hours for administration allowance