Mercury Repair Questions? Ask a Mechanic for Answers ASAP
Hello, this code indicates an internal fault in the PCM, either the calibration needs to be updated and if not pcm replaced. So its a question of why the original pcm failed if this caused the new one to fail or the new one is just bad
Possible causes are aftermarket components, damaged pcm, module programming error. No other issues to cause this. There was a tsb for water intrusion into the pcm connector for drivability concerns which was to make a drip guard to keep water entering the pcm connector. Overcharging of the altenator would be only other real thing to spike the pcm
If the aftermarket company didnt load the software correctly or a bad capacitor in the rebuilt pcm would do it.
Van must be at dealer to program, usually one hour labor
Yes, code says to try refash first, if flash does not work replace pcm
Yes thats just a evap slow leak code, not related to drivability