False Check Engine light on C7??
Ok so the check engine light came on the other day. No change in engine performance. The code is:
"Fuel DLV Pressr SPN 94 CM 0
Voltage Short or Above Normal Rng
FMI 3 OC 127"
So I got on the diesel forum on Reddit and was told the code was most likely for a bad pressure sensor. Then someone asked me for the serial # to the engine and said he could check to see if it was on a list of engines that may not have the pressure sensor. He came back and said it was not on the list, so it most likely did have the sensor. I was told if the sensor is present, there would be a wire going to the fuel pressure relief valve and that if I unplugged it the code should change to out of range. My engine does not have a wire going to the relief valve, so no sensor. So now this guy is telling me it is just a false light and that the dealer should just clear the code and reset the parameters so it doesnt happen again.
Anyone have the experience before? Can there be a "false light"? If there is a false light, what would trigger it?
The Reddit thread can be found here: http://www.reddit.com/r/Diesel/comments/2d8ka1/cat_c7_check_engine_light_and_fuel_code/
Thanks,
"Fuel DLV Pressr SPN 94 CM 0
Voltage Short or Above Normal Rng
FMI 3 OC 127"
So I got on the diesel forum on Reddit and was told the code was most likely for a bad pressure sensor. Then someone asked me for the serial # to the engine and said he could check to see if it was on a list of engines that may not have the pressure sensor. He came back and said it was not on the list, so it most likely did have the sensor. I was told if the sensor is present, there would be a wire going to the fuel pressure relief valve and that if I unplugged it the code should change to out of range. My engine does not have a wire going to the relief valve, so no sensor. So now this guy is telling me it is just a false light and that the dealer should just clear the code and reset the parameters so it doesnt happen again.
Anyone have the experience before? Can there be a "false light"? If there is a false light, what would trigger it?
The Reddit thread can be found here: http://www.reddit.com/r/Diesel/comments/2d8ka1/cat_c7_check_engine_light_and_fuel_code/
Thanks,
