LMTV 3126B Barometric pressure sensor fault code and location

[Keith Knight]

Install it and just zip tie it up right the sensor should be open to normal air or should it be mounted on something special?

 

[GeneralDisorder]

It's threaded into the cylinder head. There's an ORB fitting that you remove to install the transducer.

 

[Keith Knight]

ORB?

 

[GeneralDisorder]

ORB?

"O-Ring Boss". It's a straight thread fitting with an o-ring seal at the base of the male threads and a chamfer for the o-ring at the start of the female threads.

 

[Keith Knight]

Thanks so much guys, I greatly appreciate all the help.

Found the plug for the sensor. Going to order it and install it.

 

[Ronmar]

AKA: SAE or BSPP(british standard pipe parallel) type fittings that use a sealing Oring or sealing washer. There is usually a little step or bevel cut around the hole to contain the seal…

 

[hike]

After my original ECM died and I purchased a new one from cat and they flashed it to 330 hp I never had it connected to something that could read codes until the other day at cat when they changed my speedometer pulses for the eco hubs.

Thanks guys, So that mystery solved!

Now for a solution. If I put 194-6722 atmospheric pressure sensor on, would the trouble code go away? Would it be recognized by the ECM? Would the ECM like it or confuse it because of the static barometric pressure is programmed in there?
The biggest question is would the engine benefit at all by doing this?

Check this thread before buying? Starting at fifth post by @MatthewWBailey—

 

[Keith Knight]

That was a good read. I searched this site and google(with steelsoldiers) using barometric pressure sensor and that never showed up! Would have saved me a bunch of time.