Clearing Diagnostic Trouble Codes

DTCs can be cleared using scan tool. If scan tool is not available, turn ignition switch to OFF position. Remove PCM/IGN fuse (10-amp) from fuse block for 30 seconds. Replace fuse. If fuse cannot be located, disconnect PCM pigtail at battery for 30 seconds. DTCs may also be cleared by disconnecting negative battery cable. However, this may result in loss of other on-board memory data, such as preset radio tuning. After power to PCM is removed, poor driveability may occur until control module relearns operating parameters.

DTCs will also be cleared under the following conditions:

• PCM will turn off MIL after 3 consecutive ignition cycles without a failure reported.
• PCM will cancel DTC default actions when fault no longer exists, and ignition is cycled off long enough to power down PCM.
• DTC is cleared when vehicle has achieved 40 warm-up cycles without a failure reported.