I have been searching the site for the codes P PCU and P ECU and have found nothing. Does anyone know what they are and if they have anything to do with my A/C or is it something more serious?? Thanks for the help.

 

Those codes just mean you have no codes.

If you did, the P ECU would be followed by the code stored in the ECM,
the P PCU would be followed by the code stored in the PCM.

ECM=Engine Control Module
PCM=Primary Control Module


phox

 

So P done after both codes means nothing??

 

Yes, it is done retreiving codes.


phox

 

When my sensor on the flywheel quit my a/c didn't work--something bout makes the truck think its not running??-it was a female dog to get too also--glenn

 

My compressor just keeps kicking in and out. I think it is just low charge.

 

Sounds like a low charge or low pressure switch.

 

Just fixed my AC. compressor was doing the same thing as yours. Put a can of sealer and a can of freon. Blows cold now. Also I my vavle on the low pressure line is leaking. So I also found the leak!

 

Thanks for the info. I am going to vacume it down this weekend and cahrge it, also put sealer in. Hopefully it fixes the problem