Technical Service Bulletin CB25-L-001 — 2025 ISUZU N-SERIES
ENGINE
Bulletin Details
| TSB ID | CB25-L-001 |
| Manufacturer | |
| Vehicle | 2025 ISUZU N-SERIES |
| Component | ENGINE |
| Communication Date |
Bulletin Summary
CUSTOMER SATISFACTION CAMPAIGN: IN SOME 2025MY ISUZU N-SERIES VEHICLES EQUIPPED WITH 5.2L (4HK1) DIESEL ENGINES, OPERATORS MAY EXPERIENCE AN ILLUMINATED CHECK ENGINE MALFUNCTION INDICATOR LAMP (MIL) WITH DIAGNOSTIC TROUBLE CODE (DTC) P2201 NOX SENSOR CIRCUIT PERFORMANCE SENSOR 1. WE HAVE DETERMINED A CALIBRATION ERROR IS CAUSING THIS DTC TO SET. THIS DTC MAY BE RESOLVED BY REPROGRAMMING THE ENGINE CONTROL MODULE (ECM) AND DEF CONTROL UNIT (DCU) WITH REVISED CALIBRATIONS.
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.
Other TSBs for the 2025 ISUZU N-SERIES
SB25-L-001A
ENGINE
SB25-K-002
POWER TRAIN
CB25-G-003
ELECTRICAL SYSTEM
SB25-L-001
ENGINE
SB25-L-001
FUEL/PROPULSION SYSTEM
CB25-K-001A
POWER TRAIN
SB25-K-001A
POWER TRAIN
CB25-K-001
POWER TRAIN
V2501_DEALER NOTICE
POWER TRAIN
IB19-R-002B
ELECTRICAL SYSTEM