Service bulletins for the 2018 Hyundai Accent
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.
84 on file from NHTSA, as of 2026-10-19.
About P0303 on the 2018 Hyundai Accent: what the code means, and the bulletins and recalls about the same components.
By type
By component
By trouble code
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Only bulletins with trouble code: P0303 are shown. Show all
| 5NP-B4B6V-06 | 2018-06-11. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides the procedure to inspect the current spark plugs, replace all 4 spark plugs, check new spark plug gap, and clear Diagnostic Trouble Codes (DTC). This bulletin addresses the following conditions: ? DTC P0300 / P0301 / P0302 / P0303 / P0304 Random/Multiple Misfire. ? Engine runs rough. |
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| 5NP-W7U4F-05 | 2018-05-21. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides the procedure to inspect the current spark plugs, replace all 4 spark plugs, check new spark plug gap, and clear Diagnostic Trouble Codes (DTC). This bulletin addresses the following conditions: ? DTC P0300 / P0301 / P0302 / P0303 / P0304 Random/Multiple Misfire. ? Engine runs rough. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.