I have a 1997 Dodge Dakota with the 5.2 engine.It has started to run rough and the check engine light is on.I do get trouble codes 12,21,and 55 but done know what they mean.I have put plugs,wires,cap,and rotor in it early spring this year just as maintenance.The truck has just shy of 300 thousand miles on it.Can anyone help me with the codes or other ideas?Thanks
12 is problem with battery connection. Direct battery input to pcm disconnected within the last 50 ignition key on cycles. 27 is one of the injector control center output drivers does not respond properly to the control signal. Check the circuits. 55 is completion of codes.
21 is problem with oxygen sensor signal circuit. Sensor voltage to computer not fluctuation.
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