Without Scan Tool

To clear Diagnostic Trouble Codes (DTCs), use the diagnostic scan tool "clear DTCs" or "clear info" function.

When clearing DTCs follow instructions supplied by the tool manufacturer.

When a scan tool is not available, DTCs can also be cleared by disconnecting one of the following sources for at least thirty (30) seconds:

Caution: To prevent system damage, the ignition key must be "OFF" when disconnecting or reconnecting battery power.

^ The power source to the control module. Examples: fuse, pigtail at battery PCM connectors etc.

^ The negative battery cable. (Disconnecting the negative battery cable may result in the loss of other on-board memory data, such as preset radio tuning).


Notice: Clearing the PCM DTC memory by disconnecting the battery will clear all PCM memories. Since some operations (particularly IAC valve idle control) are learned, it may be necessary to partially depress the accelerator pedal when re-starting the engine after PCM memory is cleared. It may also be necessary to release the accelerator pedal very slowly when first returning to idle, to prevent a stall. This will allow the PCM to re-learn IAC valve position. Learned operations may be restored by normal driving.