Without Scan Tool

NOTE: Only clear DTC's when instructed to do so. All of the diagnostic data that was saved along with the DTC will also be erased when the code is cleared.

A scan tool should be used to clear diagnostic trouble codes. 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:

NOTE: When codes are cleared in the following manner, a short period of poor driveablity could result while the processor goes through a relearning process.

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: 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 Idle Air Control (IAC) valve position. Learned operations may be restored by normal driving.