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#1
11-23-2006, 11:22 AM
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code 12 and battery is good and connected
95-LHS Chysler Had trouble passing emmision test. Car runs rich. Starts and runs fine. Shifts good most of time. Wonder if step down transformer in PCM is bad? Do not know what to do to fix. Code 12 says battery has been disconnected when it has not been.
Last edited by lhs; 11-24-2006 at 10:57 AM. 
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#2
11-23-2006, 11:42 PM
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Re: code 12 and battery is good and connected
Running rich (high hydrocarbons HC) indicates either a bad catalytic converter, leaking injectors, bad plugs and/or wires, or a bad MAP sensor. A rich condition over time will slowly burn up a cat, so you may have more than one problem leading to the rich exhaust. Look at these places first before condemning the PCM.
Code 12 comes from disconnecting the battery within the last 50 key starts and is unrelated to your rich condition. Start here and see what happens.
__________________
"This car may be old, but it will still climb Kirker Pass at 110!" 1962 Chrysler 300 2-door hardtop/1964 Chrysler 300-K convertible/1964 Chrysler Newport 4-door sedan/1964 Chrysler 300-K hardtop with Firepower 390/2x1964 Chrysler 300-K hardtop/1964 Chrysler 300 convertible/1964 Chrysler "Silver 300-K" with factory 4-speed/1964 Chrysler New Yorker Salon/1980 Dodge D-50 Sport/1986 Lincoln Continental/1989 Honda Accord DX/1989 Lincoln Mark VII BB/1991 Dodge Shadow ES convertible
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