Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Continuous Memory Codes
These codes result from information stored by ECA during continuous self-test monitoring. Codes are displayed in KOEO SELF-TEST, after separator pulse code. Use these codes for diagnosis ONLY when KOEO SELF-TEST and KOER SELF-TEST result in Code 11 or 111 (pass code), and all steps under QUICK TEST are successfully completed. (There are few exceptions which may be checked after KOEO codes have been repaired). These codes indicate faults recorded within the last 40 engine starts. The fault may or may not be currently present. See appropriate chart under SERVICE CODE DEFINITION CHARTS for definitions of codes.
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Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.