Code p2617 and no start

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Apr 1, 2021 | 11:46 AM

Stevenwynne

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Code p2617 and no start

I have a 2006 f250 6.0l that I just rebuilt the motor for. Truck has about 164k on the motor. Truck started and drove down the road and it cut off out of no where. I am getting a code for p2617 with is crankshaft sensor and low icp pressure. I know from the last go around that if the camshaft is bad or unplugged it will cause the truck to not build oil pressure as a safe mode. Now I am back to the same thing happening only this time throwing codes for the crank. Cranking the truck the tach does moved but it’s not starting at all and only building bout 82 psi oil pressure. If the tach is moving what would make the truck throw a code for crank sensor it is also throwing codes for the throttle but I thought that would be from it going into a safe mode. Any help would be great

Apr 1, 2021 | 12:00 PM

bismic

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Your engine should be able to build oil pressure simply by cranking it - even with the key off.

P2617 could simply be from excessive cranking.

Fix the issue with oil pressure first.

Apr 1, 2021 | 12:10 PM

Stevenwynne

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So I know that when the cam sensor was unplugged it would not build pressure over 88 psi at the icp now I have this code and icp is staying at 82 psi truck was running I was driving it down the road and it just shut rite off could that possible be ipr is bad or clogged

Apr 1, 2021 | 01:19 PM

Stevenwynne

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No start

And to add to the info I gave I unplugged icp to try to see if it would default and it didn’t change anything

Apr 1, 2021 | 01:38 PM

bismic

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There is a default in the PCM programming that (under specific conditions) might set the IPR commanded duty cycle at 14% if the PCM detects a cam or crank sensor fault. I believe that is what you are referring to. This isn't going to affect the accelerator pedal position sensors (APP) operation - just default the IPR command to the open position.

That said, as I previously posted, the P2617 is most frequently for excessive cranks or for stall events. You should be able to develop the needed pressure simply by cranking the engine, but you can watch the IPR % duty cycle command and, if it moves off of 14% when cranking, then the low ICP issue isn't with the CKP or CMP.

Apr 1, 2021 | 01:49 PM

Stevenwynne

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No start

By chance could it be a bad icp? I unplugged it but it did not default at all

Apr 1, 2021 | 01:51 PM

bismic

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If the sensor is unplugged and it is still not starting (as well as still only showing 82 psi), then the sensor isn't the main issue (may not be an issue at all). It might be an issue in the sensor harness, or connector though.