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.
Read the readiness code
If the readiness code is set and no diagnostic trouble codes (DTCs) are stored, two operating cycles have been completed. In other words, the systems diagnostic functions have been checked twice without any fault being detected.
HINT: The readiness code is reset when diagnostic trouble codes (DTCs) are erased or if the control module has been without power.
HINT: The readiness code can also be set if a fault is detected by the on-board diagnostic (OBD) system.
Select the appropriate remedy depending on this status:
- If diagnostic trouble codes (DTCs) are stored.
Refer to Diagnostic Trouble Code (DTC) stored
- If the readiness code is not stored.
- If readiness is complete and no diagnostic trouble codes (DTCs) are stored
OKAY: Troubleshooting has been completed.
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.