How To Erase Diagnostic Test Mode II (Self-Diagnostic Results): Notes

WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

Set ECM in Diagnostic Test Mode II (Self-diagnostic results). Refer to " 1.
Fully depress the accelerator pedal and keep it depressed for more than 10 seconds.
The emission-related diagnostic information has been erased from the backup memory in the ECM.
Fully release the accelerator pedal, and confirm the DTC 0000 is displayed.

If the battery is disconnected, the DTC will be lost from the backup memory within 24 hours.
Do not erase the stored memory before starting trouble diagnoses.