1998 Plymouth Voyager "Service Engine" Codes

Slow city driving in the rain today when, with no warning or mishap, the "Service Engine Soon" light came on. No symptoms, car runs fine. Tried the ignition key on-off-on-off-on trick and got the "Service Engine Soon" light to blink out codes: 12 43 55. Alpar.com interprets this as two codes, 12 and 43 with 55 as "end of codes" delineator. The 12 code is: "Battery or Computer recently disconnected" The 43 code is: "Peak primary coil current not achieved with max dwell time...OR...Cylinder misfire...OR...Problem with power module to logic module interface" Yikes! A few days ago I had a mechanic repair a slight leak of transmission fluid at the radiator connection... perhaps he disconnected the battery as a safety measure before doing the work. But the other items?? Anybody have any idea how I could differentiate among the three possibilitiues for code 43? Also, is there a way to reset the system so that the "Service Engine Soon" light will go out? Thanks.

resetting codes?? - want disconnecting the battery grounding cable for five minutes, then connecting it back - do it?

m h o =A0v =83e

I think you should have the codes read out of the computer to find the real problem. AutoZone's will usually do it free....

m h o v fe

Get it read with a scan tool, after 1997 anyway. My book shows 43 to be a misfire condition, either multicylinder or single cylinder, but to go further the scan tool is recommended.