check engine light, what are these codes

[LWaller]

I have the following codes on my stock 2005: 2607, 0541, 0340, 0341. Anyone know what these are?

 

[MAllen1]

I can't find the 2607 and 0541 codes in my book, but, the 0340 is "no cam signal at pcm" and the 0341 is "Camshaft Position Sensor signal". The definition for the 0341 is that there is a problem with the voltage signal at the camshaft position sensor. I am willing to bet the other two codes align themselves somehow with the camshaft codes. I would check the wires, connector with the sensor, and any fuses or relay that pertain to the camshaft sensor, but, my money is on a bad sensor.

 

[TimothyLong]

Here is a link to a 2003 posting by sag2 that lists DTC codes for the '03 5. 9L engines. It includes the 4 you are looking for. The P2607 and P0541 are for Intake Heater Circuit issues.

https://www.turbodieselregister.com...s-diagnostic-trouble-codes-dtc-s-p-codes.html

 

[LWaller]

I found that on a cold start the electric air compressor and the manifold heater together were drawing the voltage to low setting off codes. I pulled the fuse on the pac brake air compressor until I install a switch. Thanks for your help with the codes.