Dreaded trans. Failsafe prog.

[Oldmactech]

Ok, got to the heart of the matter. I pulled the engine electronics fuse carrier ( underneath the right side windshield wiper and in a box with the TCM and the ECM). The 30A fuse in slot four was burnt.

Fuse 4 is Automatic transmission control module (AGS) (A7000)
And the oxygen sensors heaters. (I got getting an Oxygen sensor code also so that is confirming.

Replaced the fuse…..no joy. I’m going to recheck it but on first check after startup, the fuse was good. Have drive 10 miles since so worth a check. (Drive reasonably normally)

Does this indicate a bad TCM or something short in the trans? Or something else entirely?

One other symptom. On startup the P of PRND is brightly lit but shortly goes to dim as the other 3 letters.

Thanks.


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