Noticed check engine light on,,4 codes,,

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Mar 15, 2011 | 11:30 AM

m350

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From: Eastern CT.

Noticed check engine light on,,4 codes,,

Well today pulling my trailer with my 06' F-350, 6.0,,Pulling a hill, prob about 3k rpm,,noticed the check engine light on,,,truck was running fine,,,got Home,,let her idle,,,checked to see what (or if any) codes,,with my Edge Insight,,,yep 4 of them,,,

#1 PO261 Cylinder #1 Injection circut low
#2 PO273 Cylinder #5 Injection circut low
#3 Cl503 unkown
#4 Pl555 unkown

truck ran fine,,,got 58k plus on her,,,first time ever seeing a code on this truck,,she has Been Great,, anybody have ideas on what these mean ?

Thanks,,,,,,Mark

Mar 15, 2011 | 11:50 AM

amdriven2liv

I'm hitting easy street

Joined: Nov 2009

Posts: 6,395

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From: Central Oregon

Here is a DTC list

http://www.dieseltalk.com/support/DTC.pdf

P1555 Cylinder 5 Injector Circuit Range/Performance

C1503 Right Front Isolation Diode ABS (which I found in this list)

https://www.ford-trucks.com/forums/4...self-test.html

Mar 15, 2011 | 01:21 PM

bismic

Fleet Owner

Joined: Nov 2003

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First step (IMO) is verify the batteries are fully functional - load test them individually. Then check FICM voltage.

The injector codes indicate a short or defective injector coil. It could also be a FICM issue or a harness issue.

Mar 15, 2011 | 03:43 PM

m350

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From: Eastern CT.

OK thanks Guys thanks for the info,,,last year I replaced both batteries, and this winter with all the plowing,,(in January for us) I have replaced the Alternator with a 170 Amp one (supossedly) with smaller pulley,,to help out the reverse chatter after lifting the plow,,it did seem to help,,and have had No issue's until today.

I will check out the Batteries, I will have to read up on How to check the FICM voltage,,,I have seen it on here,,,Just need to brush up on the Procedure ! Any Hints on this ?