My check engine light came on while driving twice in the past two days.
The engine continued to run perfectly, with great oil pressure, temp normal, and alternator charging seems ok.
The keydance number were,
12
45
37
21
55

Does anyone have a code book and can break this out.
Thanks,
Ken

 

12) Battery power to PCM was disconnected.
37) Torque Converter Clutch Solenoid/Trans Relay Circuits: An open or shorted condition detected in the torque converter part throttle unlock solenoid control circuit (3 speed auto RH trans. only).
21) Left Upstream O2S Shorted to Voltage: Oxygen sensor input voltage maintained above the normal operating range.
45) Trans Temp Sensor Voltage Too Low: Voltage less than 1.55 volts.
55) End of Messages.

 

Ok, thanks.
I have no idea how old some of those codes might be.
I think I'll clear them tomorrow and let them start over.
If, for example, I had 2 code 21's, would 21 show twice??

 

No it would not, the code only comes up once. Now after clearing it it may return if it is the problem.

 

LOL -- I guess that was a pretty stupid question, everything considered. I don't know what I was thinking about.
Thanks