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ICP CIRCUT OUT OF RANGE "LOW" AND EXHAUST BACK PRESSURE SENSOR CIRCUT ERROR

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  #1  
Old 05-05-2004, 04:05 PM
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Icp Circut Out Of Range "low" And Exhaust Back Pressure Sensor Circut Error

Please Help ..........what Would Cause These Codes To Appear On My Scmt ..and How To Remedy Them Thanks In Advance Any And Everyone. OOOPS ALMOST FORGOT ITS A 1997 F250 CREW CAB 4X4 POWERSTROKE WITH 54700 MILES ON IT.....
 

Last edited by cmrclgc; 05-05-2004 at 04:51 PM.
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Old 05-05-2004, 08:21 PM
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Z1 DIAGNOSTIC TROUBLE CODE (DTC) P1280: ICP CIRCUIT LOW INPUT
DTC P1280 indicates injector control signal circuit out of range low was detected during KOEO Self Test or during continuous diagnostic monitoring.
Possible causes:
biased ICP sensor/PCM
open ICP sensor circuit
short to SIG RTN or PWR GND on ICP sensor circuit
open in VREF circuit
DTC P0470 indicates an EBP sensor malfunction was detected during KOEO On-Demand Self Test.
Possible causes:
damaged EBP sensor
open signal ground
damaged PCM

Probably replace EBP sensor, ICP may need some diag. have you cleared codes to see if they return? Are these memory codes, or hard faults?
 
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Old 05-05-2004, 09:09 PM
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memory codes..... just got done resetting will take for drive and recheck.... thanks for the info.....what is the normal position of the control rod lookin at it from the front of the motor should it be towards the drivers side.....and if so is that the normally open or closed position...? sorry as far as the ebp goes thanks again...!
 

Last edited by cmrclgc; 05-05-2004 at 09:16 PM.
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Old 05-05-2004, 09:41 PM
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Yes, the driver's side, normally open; when cold, oil pressure from the EBP solenoid will push the rod to the pass. side. The EBP sensor is in the front of the engine on a tube from the right exhaust manifold and is susceptible to sticking at higher than base voltage.
 
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Old 05-06-2004, 01:11 AM
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Thanks Fordtechie..... What Part Of This Great Ford Laiden Country R U From.....?
 
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Old 05-06-2004, 10:17 AM
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Originally Posted by Fordtech1
Yes, the driver's side, normally open; when cold, oil pressure from the EBP solenoid will push the rod to the pass. side. The EBP sensor is in the front of the engine on a tube from the right exhaust manifold and is susceptible to sticking at higher than base voltage.
On my 96 with 90k miles this tube was completely blocked with ehaust carbon so bad compressed air couldn't blow through it. Took it off and about four hours later had cleared it with a piece of braided wire. The sensor costs about $160 from Ford so I didn't replace it. I started looking because of very poor cold engine performance. Is this common and am I on the right track?
 
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