2006 Monterey Check Engine Light

[Richard Davis]

The Check Engine Light on my 2006 Monterey has come on.  The diagnostic flash code is a "25".  The Cat manual calls it a "Intake Air Pressure Sensor Failure".  My Silverleaf calls it "Boost Pressure Sensor - High Voltage".  The end result is the ECM shuts off the boost pressure calculation for the injectors.  So, I am driving this beast with no turbocharger boost.  I am puzzled by the "High Voltage" statement.  What does that mean?  I  am in Antonito Colorado in the middle of nowhere.  Does anyone have any idea where I can find a new boost sensor and someone to put it in for me?  I have kind of aged out of doing it myself.  I will attempt it if I must, but would prefer to let some one knowledgeable do it.  Also, if anyone knows the part # for a boost sensor for a CAT C9, I would appreciate it.
Thanks.  Richard

[Steve Huber Co-Admin]

Richard,
I replaced the boost pressure sensor in my C9 in 6/19. Part #s as follows.
  Sensor: 266-8650 but I think the updated # is 276-6793  Cost $166..05
  O ring: 214-7566   Cost $3.74
When ordering have your engine serial# handy to ensure the right sensor.
You may want to contact Dave Atherton (his phone# is in then member Directory) regarding your symptoms before throwing $ at the problem.
Steve

[Richard Davis]

Thanks Steve!
I have ordered the updated sensor with new O-ring.  Did you change it yourself?  I am in a National Forest campground and will have to do it myself.  I hope to not have any problems.
Richard

[Steve Huber Co-Admin]

Not too tough. Attached location diagram should help.
Steve