What is the icp

 

2002 f 350 7.3

 

It is a sensor on top of the driver head. Riffraffdiesel.com sells it for $140ish

 

If your stuck you "can" unplug it and drive without it. The computer will make up numbers. You will not have all of your power and you fuel mileage will go to **** but it will get you home. I drove 400+ miles without it because I could not get it on the road.

 

icp = injector control pressure

located in the drivers side head at the front.

 

Are you asking what is the ICP sensor, or what is ICP? Did you get a code pointing to ICP out of range? There are several components that control & regulate ICP, and quite a few things that can cause it to be out of range.

 

I got 3 codes 1280/ 1212/ 1211

 

For my Texas brother...

1211 - ICP Not Controllable. Pressure above or below desired PSI
Possible causes:
incorrect oil or viscosity
poor oil quality
gel fuel/no fuel
low fuel pressure
damaged IPR valve
high-pressure oil system leak
damaged high-pressure oil pump
damaged PCM

1212 - ICP Voltage Not at Expected Level
Possible causes:
high- pressure oil system repair
empty/low reservoir at crank
low engine oil level or incorrect viscosity
IPR circuit fault
damaged low-pressure pump
damaged IPR valve
damaged ICP sensor
Damaged high-pressure oil pump

1280 - ICP Circuit Out of range LOW
Possible causes:
biased ICP sensor/PCM
open ICP sensor circuit
short to SIG RTN or PWR GND on ICP sensor circuit
open VREF circuit

 

A bad ICP sensor can throw the 1211 as well. Pull the plug on the sensor and see if that improves whatever situation you're having.

All three of those codes can be thrown after an oil change because of air in the system. A lot of cranking, a bit of driving, clear the codes, and it never happened.

 

These is a friends truck we did unplug the sensor it ran a little better we put a different sense not a new one just a different one of another motor it did run a little better but its still not right he knows a guy that works on diesels that has a scanner supposed to come by and see what it is Thanks for everybody's help I'll let you know what we find at least he's able to drive it home and back to work

 

Looks like we got it fixed.
This all started when the a/c compressor went bad Replace the AC compressor recharged Truck started running bad We have changed both valve cover gaskets the IDM The ICP sensor Truck would start running good after each thing we changed then go back to running bad after reading Nicmike's post last night after we change the idm and it still ran bad we checked all the cylinders with a temperature gun number one cylinder was only showing like 170 all the other cylinders were showing like 230 240 at that point my buddy walked away and I walked over and pulled the dipstick she was 6 quarts low put oill in it fired right up idols and drives perfect. WE KEPT SAYING WHEN WE FOUND THE PROBLEM IS GOING TO BE SOMETHING STUPID. LIKE TO THANK EVERYBODY FOR THE INPUT HATS OFF TO MY TEXAS BROTHER

 

I was going to say it's a shame you replaced all those parts before finding out it was low on oil (6 quarts? wow!), but other than the IDM, those are parts that were probably due or would soon be due for replacement eventually.

Glad you got it running.

 

The real funny thing is we had two different people who work in diesel trucks like ours and dodges come by with with their snap on and Mac computers and they both said that the oil pressure and all was good.