Code P1280 ICP sensor out of low range - Ford Powerstroke Diesel Forum
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Old 09-02-2013, 11:12 AM
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Code P1280 ICP sensor out of low range

Hey, I think I may have tracked the issue down but somethings still confuse me. Does my ICP sensor need replacing?

I put my scanner on (aeroforce interceptor) and my ICP psi reading at idle is fluctuating between 600-750psi and duty cycle % is around 14.4

Last night driving in gear my idle starting jumping all over the place, truck sounding like is wanting to die and stall. Looked at my ICP pressure and it was dropping quickly, hit about 150psi when the truck started to stall. Duty cycle went down as well and this was in gear with the throttle on. CEL came on as well. So this morning I did some more research, I unplugged the sensor and there was no oil in the connection (I did not unscrew or remove it from the head) only plugged it. Plugged it back in, started the truck and as usual the PSI was jumping between 600-750psi so I unplugged the sesnor and ICP pressure stayed at 655.53psi, CEL came on. Plugged the sensor back in turned the truck off. Unplugged sensor truck still started fine and pressure was steady still. ICP sensor need to be replaced?? I had the IPR changed last november

Ps. The symptoms have been doing that for awhile, jumping around, truck almost dieing, CEL come on. I did put my chip back on which was a 6 stage programmer from DPtunes but after a few days those symptoms occured so I removed it. Symptoms been going for a month now and my scanner came in last week. Thought it was the PCM or chip. Now I think the ICP sensor is on it's way out.

Truck is a 1996 F350 5speed 7.3 , 247,000 kilometers (153,479 miles) on it,

Last edited by Buckhunter8813; 09-03-2013 at 10:37 AM.
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Old 09-03-2013, 10:38 AM
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Any thoughts on this guys?
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Old 09-03-2013, 11:43 AM
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Possibly the ICP sensor, does the connector and pins look good? Make sure the IPR solenoid nut is snug and the coil can't move around. Cheers!
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