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.
DTC Check/Clear
- If no DTC appears in normal mode:
On the OBD II scan tool or the hand-held tester, check the pending fault code using the Continuous Test Results function (Mode 7 for SAE J1979).
- When the diagnosis system is changed from normal mode to check mode or vice-versa, all DTCs and freeze frame data recorded in normal mode will be erased. Before changing modes, always check and make a note of DTCs and freeze frame data.
- CHECK DTC (Using the OBD II scan tool or hand-held tester)
- Connect the OBD II scan tool or hand-held tester to the DLC3.
- Turn the ignition switch ON.
- Use the OBD II scan tool or the hand-held tester to check the DTCs and freeze frame data and then make a note of them.
For the hand-held tester, enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODEDS. For the OBD II scan tool, see its instruction manual.
- See DIAGNOSTIC TROUBLE CODE CHART to confirm the details of the DTCs.
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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.