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.
How To Erase Permanent DTC: Description
OUTLINE
When a DTC is stored in control module
When a DTC is stored in control module and MIL is ON, a permanent DTC is erased with MIL shutoff if the same malfunction is not detected after performing the driving pattern for MIL shutoff three times in a raw.
| *1: | When the same malfunction is detected in two consecutive trips, MIL will illuminate. | *2: | MIL will turn off after vehicle is driven 3 times (driving pattern B) without any malfunctions. |
When a DTC is not stored in control module
The erasing method depends on a permanent DTC stored in control module. Refer to the following table.
x: Applicable, -: Not applicable
| Group * | Perform "DTC CONFIRMATION PROCEDURE" for applicable DTCs. | Driving pattern | Reference | |
|---|---|---|---|---|
| B | D | |||
| A | x | - | - | Work Procedure (Group A) |
| B | - | x | x | Work Procedure (Group B) |
*: For group, refer to "DTC Index" of each control module.
PERMANENT DTC ITEM
For permanent DTC items, MIL turns ON. Refer to "DTC Index" of each control module.
PERMANENT DTC SERVICE PROCEDURE
NO RELATED
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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.