I have a 2002 7.3. Pulled the code and it displayed INJECTION PRESSURE CONTROL. It doesnt say if its the sensor or a relay or nothing. The tech is going to have to run a test to see what needs to be replaced or fixed. Since the truck runs fine, the volts and psi are correct, for now. the tech needs for it to fail firing up so that he can hook up the code reader and see what is failing at that instant. My question is: what is the most common part needed to be replaced or fixed when the ICP has failed?

 

What was the number of the code exactly? "Injection Pressure Control" is not the full description of the code. Also, do you have any mods like a chip or tuner?

 

There are a handful of things that can cause ICP related codes. From a bad fuel filter, to a weak HPOP. More details please.

 

the code read was P1212. Sometimes, the truck doesn't want to fire up, it cranks good and everything works just fine but it just doesnt start. I wait from 2 to 30 minutes and it fires right up. It doesn't happen very often but its annoying when it happens. I replaced the CPS about a week ago. How do I take the fuel filter out to check if its dirty? Thanx for the help though.

PS I do not have a tuner or programmer or chip in it. It is completely stock other than the kwik filter.

 

P1212 is ICP voltage not at expected level. First inspect the sensor for problems. It's located on the driver's side oil rail. Look on the top of the driver's side head just behind the alternator. The sensor mounts in the oil rail and is connected by a 3-prong electrical connector. Look for signs of frayed wires or oil leaking out of it as it's becoming a rather common problem. Most likely is that the sensor is malfunctioning and needs to be replaced. For a quick test, unplug the electrical connector leading to the ICP sensor and crank the truck. If it fires up and idles fine, then you know for sure the sensor is bad. The PCM will load default ICP tables and try to "guess" proper high oil pressure when the sensor is unplugged. If the ICP sensor is bad, it sends biased voltage to the PCM, and it can't figure out how to properly set high oil pressure. Unplugging the sensor gets rid of that biased voltage reading and isolates the bad sensor.

If you do find that the ICP sensor is bad, I found one in January on E-bay for $45, the dealer will charge you more than $150 for the exact same one.

The sensor has been redesigned, so when you get a new one, just note that it won't look identical to the old one.

Hope this helps and post back with your findings or any other questions.

 

thanx a lot man. That really helps me a lot. I will run the test shortly and post how it went.

 

well, my problem got worse. It seems now that my truck just dies when driving and will not start back up untill the engine cools down (about 45 minutes to 1 hour). I replaced the ICP sensor because that is what the scanner pulled as a code. The thing is that when i take it to the tech, the truck wont fail at all. they need for it to fail so they can diagnose the problem. They kept it for 2 days and ran the truck up and down and never failed. This morning going to work, what a surprise, it dies on me. Its very frustrating and don't know what to do anymore. Any ideas?

 

I'm moving this one to the 7.3L PSD section.

drbalazo, did the SES light illuminate when the truck first started exhibiting this issue, and that's what made you pull the codes? Or, did you just check for codes just in case, and found this one. I ask because if it just started acting up in this manner, with no SES light (or even w/ an SES...), another possibility is the CPS. They're so cheap now, it's almost worth just swapping in a new one and if it fixes it, great, and if not, you've got a good spare to keep in the glove box.

 

Sometimes corrosion on the plug blocks the electricity from flowing. Try unplugging and examining every plug on the engine and make sure that there is nothing but clean shiny metal contacts.

 

Look at the IPR o rings...& clean it while you have it out ...Next step is to set up a guage to test the Injector o rings,.....