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.
Testing Condition
For better results, perform DTC WORK SUPPORT at a temperature of 0 to 30° C (32 to 86° F) .
- Turn ignition switch ON and select DATA MONITOR mode with CONSULT-II. See Figure.
- Start engine and warm it up to the normal operating temperature.
- Turn ignition switch OFF and wait at least 10 seconds.
- Start engine and keep the engine speed between 3,500 and 4,000 RPM for at least 1 minute under no load.
- Let engine idle for 1 minute.
- Make sure that COOLAN TEMP/S indicates more than 70° C (158° F).
If not, warm up engine and Go to next step when COOLAN TEMP/S indication reaches to 70° C (158° F).
- Open engine hood.
- Select HO2S2 (B1) P1147 or HO2S2 (B2) P1167 of HO2S2 in DTC WORK SUPPORT mode with CONSULT-II.
- Start engine and following the instruction of CONSULT-II.
- Make sure that OK is displayed after touching SELF-DIAG RESULTS.
If NG is displayed, Refer to DIAGNOSTIC PROCEDURE .
If can not be diagnosed is displayed, perform the following.
- Turn ignition switch OFF and leave the vehicle in a cool place (soak the vehicle).
- Return to step 1.
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.