Cm 2350 derate with spn 1209

[farmtrucknw]

(09-06-2025 )tree98 Wrote:  Check the wiring to the exhaust pressure sensor and also the metal feed tube and sensor block that connects the sensor to the exhaust manifold, they get plugged with carbon. What is that sensor reading in insite with the key on engine off?

With the new sensor, engine off, 98.7 kPa and a voltage of .877 volts. 29.1 inHg and local airport is 29.15 inHg, not sure if that considered close for that sensor or not.

That was checked with my laptop and {3rd party software}. I have to run up to my neighbor for incite to pull codes again.