Service bulletins for the 1998 Nissan Frontier
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.
65 on file from NHTSA, as of 2026-10-19.
About P0400 on the 1998 Nissan Frontier: what the code means, and the bulletins and recalls about the same components.
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By component
By trouble code
Only bulletins with trouble code: P0400 are shown. Show all
| 05040 | 2005-08-18. Service bulletin. ENGINE AND ENGINE COOLING. MIL WITH DTC P0400, P0402, ROUGH IDLE, DRIVABILITY INCIDENTS, DIFFICULTY SETTING EGR SRT. *SC |
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| 05040A | 2005-08-16. Service bulletin. ENGINE AND ENGINE COOLING. 1998-2000 FRONTIER & XTERRA WITH KA24 ENGINE; MIL WITH DTC P0400, P0402, ROUGH IDLE, DRIVABILITY INCIDENTS, DIFFICULTY PASSING I/M TEST FOR NO X UPDATE *SC |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.