P1211 need help

g2outfitter · May 6, 2016

Trucks a 97 7.3 F350 auto 4x4. 167k

Yesterday I had 160/30 injectors installed, efuel, d66 turbo,bellowed up pipes and dwn loaded tw tunes custom to my hydra. Truck run great but if I get on it any it throws P1211 code. Im thinking hpop, but was has me stumped is if I put back on stock programming it still does it. Never did before.

If I drive real real easy it doesnt come on.

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joe d · May 6, 2016

Hpop.

mattman347 · May 6, 2016

Do you have fuel pressure with the new system?

TyCorr · May 6, 2016

What kinda icp is the tuning calling for?

g2outfitter · May 7, 2016

Yes fuel pressure is reading 65. Ty not sure whats your question.

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joe d · May 7, 2016

Injector control pressure..( Hpop pressure)

TyCorr · May 7, 2016

Injection control pressure. Its the measure of the high pressure oil pumps output.

After you answered that I wanted to know what icp is commanded by the tuning when it pops the code.

g2outfitter · May 7, 2016

Code just say icp is either high or lower than required

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Magnum PD · May 7, 2016

Still got the stock HPOP?

g2outfitter · May 7, 2016

Yes. Guess I have a new purchase in near future.

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Magnum PD · May 7, 2016

Super Duty pump can work.

Justin@DP-Tuner · May 10, 2016

A good way to test this is to hook up a scan tool and watch ICP and IPR duty cycle. Normally, tuners call for 2600+ psi ICP. If you see ICP drop below comanded and IPR duty cycle go over 65%, that is why you are getting a P1211. If could be caused from a weak pump, or too much PW in the tune, or even a combination of both.

g2outfitter · May 10, 2016

Thanks Justin, I believe its the pump. On my Cts it is showing high 50's so I bet for a split second its going over 65. I have a new pump on the way.

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Justin@DP-Tuner · May 11, 2016

g2outfitter said:
Thanks Justin, I believe its the pump. On my Cts it is showing high 50's so I bet for a split second its going over 65. I have a new pump on the way.

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No problem. Report back if that fixes it, to help others out in the future.

g2outfitter · Jun 10, 2016

Well new hpop. Lines and ipr valve were replaced and fixed my P1211 light. Thanks for the help. Now if I can only fix my door locks

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