Chrysler Full-Size Trucks 1997-2000 Repair Guide

Clearing Codes



These codes are retained in memory for usually around 40 warm-up cycles. To clear the codes for the purposes of testing or confirming repair, perform the code reading procedure. Use the DRB-II scan tool or equivalent to erase the memory. Disconnecting the negative battery cable will not erase the code completely from the memory, it will remain as a continuous fault. The MIL lamp will remain out if you disconnect the battery, and the malfunction that lit the MIL lamp is repaired. After 40 warm-up cycles or so are reached, the code will be erased from the PCM's memory.