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
Ensure a Pass Code "00" was displayed or no codes were present in both the KOEO and KOER SELF-TEST procedures, or a code was received but the "Check Engine" light did not light, before continuing with this test. Clear code memory before continuing this test. The cause of some Continuous Memory Codes may have been eliminated during KOEO and KOER code repairs. If a code was present during the KOEO or KOER test sequence but the "Check Engine" light did not light prior to activating the Self-Test, service these codes only if they are present during the CONTINUOUS SELF-TEST.
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.
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