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 Confirmation Procedure
- CHECK DTC PRIORITY
If DTC P050B is displayed with other DTC, first perform the confirmation procedure (trouble diagnosis) for other DTC.
Is applicable DTC detected?
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Perform diagnosis of applicable. Refer to DTC Index .
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GO TO 2.
- PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
- Turn ignition switch OFF and wait at least 10 seconds.
- Turn ignition switch ON.
- Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.
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GO TO 3.
- PERFORM DTC CONFIRMATION PROCEDURE-I
With CONSULT
- Turn ignition switch OFF and wait at least 10 seconds.
- Turn ignition switch ON.
- On CONSULT screen, select "ENGINE">>"Data Monitor".
- Check the indication of "COOLANT TEMP/S".
With GST: Follow the procedure "With CONSULT " above.
Is the value of "COOLANT TEMP/S" between 4°C (39°F) and 36°C (97°F)?
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GO TO 4.
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Warm up the engine until the value of "COOLANT TEMP/S" reaches 4°C (39°F) or more. Retry from step 1.
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Cool engine down to less than 36°C (97°F). Retry from step 1.
- PERFORM DTC CONFIRMATION PROCEDURE-II
- Set the select lever in N range.
- Start the engine and warm up in idle with the value of "COOLANT TEMP/S" between 4°C (39°F) and 40°C (104°F) for more than 15 seconds.
- Check 1st trip DTC.
Is DTC P050B detected?
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Proceed to Diagnosis Procedure .
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To check malfunction symptom before repair: Refer to Intermittent Incident .
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Confirmation after repair: INSPECTION END
NO RELATED
Use the Manual With the Right Hardware
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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.