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I never knew older Chryslers could do the keydance until yesterday, go figure. The CEL has been flickering for as long as as I can remember. I was always told it was an ECU glitch, but it turns out its been throwing codes all this time! Go figure.

The Shadow (1989) is throwing the following codes (and I these seems to be the definitions I found):

12 - Battery has been disconnected within the last 50 starts.
23 - Air charge temperature sensor out of range
15 - No signal from the speed sensor
55 - End of fault code list

Assuming these are correct, I'm guessing I'll need to replace a couple sensors. Would their be any other cause for the fault codes besides faulty sensors?

Also, does anyone happen to know where they are located?
 

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3.0L engine? If so, the speed sensor is probably bolted into the trans and the intake air sensor is in the duct work.

A bad PCM wiring harness could cause it too...check for frayed or loose connections
 
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