So I've been having problems with the P0237 code the past week or so..

At first, it was off and on, now it seems like it's on all the time and my boost will surge like crazy...0 psi, then 6, then 2, then 8 when under regular acceleration and you can definitely feel it.

I disconnected the MAP plug and the Edge harness that it plugs into and cleaned them both with some electronic connections cleaner. The CEL went off for about 15 min on a test drive, then came back on and the truck doesn't seem to be doing any better.

What else can I do at this juncture? Can I just take the Edge harness off of the MAP and test it that way without screwing anything up? It's getting really annoying trying to drive it this way...

 

Yup, just take off the edge map connector, use a wire tie and wrap it up under the hood, plug in the original map plug and give er a whirl and see what's up.

good luck, I've been fighting a 234 237 code for a few weeks now. I'm not working tomorrow so I hope to dig into the source of the problem.

 

I unhooked my comp and went back to the factory set up , havn't got the code anymore. probably in the edge box like mine was.

 

i have had the same problem for a few months now... it goes away and comes back.. i think mines in the box... but edge dosent seem to care when i call...