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  1. OBD-II Check Engine Light Trouble Codes

    OBD-II OBD2 Diagnostic Trouble Codes. Definitions and suggested repair procedures.

  2. Common Check Engine Light Codes - O'Reilly Auto Parts

    Read on to learn what kinds of issues can most commonly cause your Check Engine light to illuminate, how to read Check Engine codes, and what some of the most common DTCs may mean.

  3. OBD-II Trouble Code Chart - RepairPal

    Get definitions and auto repair information for thousands of OBD-II codes. Look up B, C, U and P codes to diagnose your car problem.

  4. 5 Most Common Check Engine Light Codes, Causes, and Fixes

    Oct 29, 2025 · After two decades of working in and around cars, I can tell you the trouble codes behind that light aren’t random. After years of writing up estimates based on fault codes, I’ve noticed …

  5. Top 10 Common Check Engine Light Codes 2025 | Rohnert Park ...

    Sep 10, 2025 · In this comprehensive guide, we'll explore the top 10 most common check engine light codes, explaining what each means, their typical symptoms, root causes, and most importantly, what …

  6. Understanding the Most Common Check Engine Light Codes

    Sep 2, 2025 · Discover the most common check engine light codes, their implications, repair costs, and essential facts for informed vehicle maintenance.

  7. OBD-II Code List | Kelley Blue Book

    Find out what your OBD-II code means by using this list of standardized diagnostic trouble codes common to all vehicle manufacturers.