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James, Ford Technician
Category: Ford
Satisfied Customers: 3588
Experience:  Ford Senior Master Tech, Ford gas and diesel expert, ASE Certified
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2002 f350 7.3 psd code p1211 only during hard acceleration.

Customer Question

2002 f350 7.3 psd code p1211 only during hard acceleration.
Submitted: 6 months ago.
Category: Ford
Expert:  James replied 6 months ago.

Hello, you can correct this code by putting in a new ICP sensor and pigtail harness into the vehicle.

Customer: replied 6 months ago.
long story short replaced cups, injectors, ipr, icp and pump. Didnt have problem before and when road testing you can see the ipr % go up over 50 and see the pressure drop. No performance issue and plenty of power.
Customer: replied 6 months ago.
fuel pressure maintains close to 70 psi and during hard acceleration may drop to 63 psi
Expert:  James replied 6 months ago.

was there oil in the old ICP sensor?

Customer: replied 6 months ago.
Expert:  James replied 6 months ago.

Replacing the connector to the ICP sensor should correct this concern then.

Customer: replied 6 months ago.
i hope it's that simple. Should I try to apply pressure to each head and close the ipr valve?
Expert:  James replied 6 months ago.
You can if you would like. When driving under a load the IPR duty cycle will increase to increase icp sees sure to fire the injectors. At idle the IPR is around 14%. An IPR duty cycle at 50% isn't that bad under load. When the icp sensor leaks oil it goes into the copper wiring and destroys the wire from within.
Customer: replied 6 months ago.
sorry to take so long to reply back. I was able to get a pigtail saturday and I installed. road tested and code came back. Any suggestions?
Expert:  James replied 6 months ago.

Did the code come back right way?

Customer: replied 6 months ago.
not at first. I drove the truck easy until it warmed up. first and second time putting the pedal to the floor it was good. the third time the check engine light came on and stayed on.
Expert:  James replied 5 months ago.

Do you have a second icp sensor or one from a doner vehicle you can try?

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