Service bulletins for the 2003 Isuzu Ascender
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
173 on file from NHTSA, as of 2026-10-19.
About P0300 on the 2003 Isuzu Ascender: what the code means, and the bulletins and recalls about the same components.
By type
By component
By trouble code
Only bulletins with trouble code: P0300 are shown. Show all
| PIP5628 | 2019-03-11. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308 and/or P050D |
|---|---|
| 0702001 | 2007-04-06. Service bulletin. FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM. VARIOUS DRIVEABILITY SYMPTOMS DUE TO CLOGGED FUEL INJECTORS, MIL DTC'S P0171, P0172, P0174, P0300, P1174, AND P1175. *KB UPDATED 08-03-07. *KB |
| 0711001 | 2007-04-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. 4.2L LL8 ENGINE - FLASHING AND/OR MIL LIGHT, ROUGH IDLE, MISFIRES DTC'S P0300, P0301, P0302, P0303, P0304, P0305, P0306. *KB |
| 0401S002 | 2004-07-20. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SERVICE ENGINE SOON/CHECK ENGINE LIGHT ILLUMINATED, MISFIRE OR ROUGHNESS, DIAGNOSTIC TROUBLE CODE P0300 SET. *TT |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.