My truck is due for emissions so I removed my edge comp.  When I started the truck the CEL came on and I have a P0237 code.  It will not clear.  I plugged the factory MAP sensor plug into the sensor and no change.  I drove it around and it it runs and drives fine, no smoke.  After driving it a bit the CEL went out but the code is still there (both pending and confirmed).  I pulled up the "Intake Manifold Absolute Pressure" pid on my scan tool and that value seems accurate and responds to driving.  I am going to go out and see if I can determine the voltage...maybe pull the MAP sensor. 

 

Any other ideas? 

Can you clear it now that the CEL is out? If the CEL shut off, it means it's reading fine now. 

9 minutes ago, TFaoro said:

Can you clear it now that the CEL is out? If the CEL shut off, it means it's reading fine now. 

Nope, even with the CEL out the codes don't clear.  It is not the lamp that is out...it comes on when I turn the key and my OBD scan tool shows that codes and also recognizes that the MIL is not illuminated.

Does anyone know if can read the MAP sensor voltage with the OBDLink?

it wont read voltage.  I would drive for a few days and see if the code gets deleted.

All codes can be cleared or erased. This just mean that you cant erase the code because the code is real. So I would suggest going and reading up on the P0237 code in the ODB listing on the site.

Edited March 31, 20178 yr by Mopar1973Man