Saturn check engine codes
Overview
Saturn (discontinued after 2010) used GM and some shared engines. Codes follow GM patterns.
Codes notably common on Saturn
Saturn specific notes
- Engine codes on this brand behave the same as on any other vehicle. Use the code pages below; the causes and urgency ratings apply.
Owner's manuals
Official Saturn owner's manual / owner portal (manufacturer site; we do not host copies).
Repair manuals
Step-by-step service manuals for Saturn with torque specs and wiring diagrams:
Haynes manuals for Saturn Chilton manuals
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Recall lookup
Check open Saturn recalls with your VIN at the NHTSA recall lookup.
Sources
Sources checked October 2026. Bulletins apply only to the models and years they list.
All other codes
These work the same on Saturn as on any vehicle:
P0420 P0430 P0300 P0301 P0302 P0303 P0304 P0174 P0440 P0442 P0456 P0128 P0135 P0141 P0101 P0299 P2135 P0401