P1624

P1624 - MIL on request signal to ECM (from TCM).
The TCM has requested that the ECM turn on the MIL. (The TCM does not have the authority to turn the MIL on.)

This code informs you that an A/T related code was set and should be accompanied by another code which indicates the diagnostic condition.

Refer to Transmission Control Systems. Automatic Transmission/Transaxle

Also, refer to the following TSBs for more information:
^ 00-40-011
^ 00-40-012
^ 01-40-006-1
^ 98-40-002