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 ECM
When a DTC is stored in ECM 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 ECM
The erasing method depends on a permanent DTC stored in ECM. Refer to the following table.
x: Applicable --: Not applicable
|
Group * |
Perform "DTC CONFIRMATION PROCEDURE" for applicable DTCs. |
Driving pattern |
Reference |
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|
B |
D |
|||
|
A |
x |
-- |
-- |
|
|
B |
-- |
x |
x |
|
*: For group, refer to DTC Index .
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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.