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Old 04-04-2013, 07:57 AM
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Help! P1211 Code

I have a 1999 F250 7.3 with 127,000 miles. It's used as my work truck and I had to get on it the other day and a "service engine" light came on. Read the code and P1211 popped up. "Injection Control Pressure (ICP) Not Controllable-Pressure Above/Below Desired". I don't feel like it's running any differently but I have only owned it for about 3 weeks so I don't know the truck that well. Thank you!
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Old 04-04-2013, 08:17 AM
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this is common on trucks with programmers or chips. the computer calls for oil pressures above what the stock programming uses.
if its all stock i would pull the plug out of the icp and look for oil coming through the sensor.
if theirs oil coming through the sensor its going bad.
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Old 04-04-2013, 08:26 AM
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Thank you! I will try that today
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Old 04-04-2013, 10:29 AM
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This could also mean that the HPOP is getting weak. You would need a scan tool to confirm this though.
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