P0611 - another FICM thread... Bad batteries - Ford Powerstroke Diesel Forum
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post #1 of 11 Old 05-14-2016, 09:15 AM Thread Starter
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P0611 - another FICM thread... Bad batteries

The battery indicator has been coming on in my truck occasionally and going away. The P0611 code comes and goes... no cold start issues... poor fuel economy... Bully Dog shows my battery voltage as 12.7-12.8 when cold... and usually 13.1 when up to temp...

Anyways, can a bad battery alone cause the P0611? Meaning, could replacing the batteries, possibly fix everything, and the FICM be fine (for now)?

Or is the damage done, and now I probably need to replace the batteries and the FICM?
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post #2 of 11 Old 05-14-2016, 09:24 AM
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What is your FICM voltage?

2004 F550 CC Lariat
BPD oil cooler relocation and upgraded EGR cooler (spooled), BPD oil bypass filtration, aFe Magnum Force CAI, Mishi radiator, 7.3L fan clutch, EC1 ELC, XDP coolant bypass filtration, '08 trans pan/filter, PTP direct clutch solenoid, blue spring, 6.4 starter, MBRP y-pipe, BD boots/clamps, '05 intake elbow, ccv reroute, Torque Pro + OBDLinkô LX, Autometer EGT
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post #3 of 11 Old 05-14-2016, 09:38 AM Thread Starter
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I haven't checked it yet. Could bad batteries cause the FICM voltage to read low?

Just noticed you're from Auburn, nice! I'm in Hicksville, oh about 25min away.
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post #4 of 11 Old 05-14-2016, 09:39 AM
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I would count on a FICM but you want your charging system and batteries to be in good shape before you order a FICM solutions

12.7 12.8 when cold isn't a FICM killer

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post #5 of 11 Old 05-14-2016, 09:41 AM
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Alternator may be going as well..I would see 13.4 as my lowest after GP cycle with a 130 amp part store Bosch unit..
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post #6 of 11 Old 05-14-2016, 09:47 AM
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Quote:
Originally Posted by travsav View Post
...

Just noticed you're from Auburn, nice! I'm in Hicksville, oh about 25min away.
Got it to close, yes. Another member - Corey from CNC Fabrication - is in Defiance. He can diagnose anything.

Check your FICM voltage when you can - taking heed to @ZMANN 's and @ShiZor9 's sage advice. ...and - yes - a low voltage in will lead to a low voltage out on a FICM.

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BPD oil cooler relocation and upgraded EGR cooler (spooled), BPD oil bypass filtration, aFe Magnum Force CAI, Mishi radiator, 7.3L fan clutch, EC1 ELC, XDP coolant bypass filtration, '08 trans pan/filter, PTP direct clutch solenoid, blue spring, 6.4 starter, MBRP y-pipe, BD boots/clamps, '05 intake elbow, ccv reroute, Torque Pro + OBDLinkô LX, Autometer EGT
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post #7 of 11 Old 05-15-2016, 04:37 PM Thread Starter
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Replaced batteries with NAPA Legends 850CCA, tested FICM (7-pin), 48v with key on... 38v while running
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post #8 of 11 Old 05-15-2016, 04:42 PM
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Quote:
Originally Posted by travsav View Post
Replaced batteries with NAPA Legends 850CCA, tested FICM (7-pin), 48v with key on... 38v while running
Now you need to replace the FICM, the low voltage did it in.
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post #9 of 11 Old 05-15-2016, 09:46 PM
Fuel it up again Dummy
 
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Yup the power board is toast.......... I have seen Dorman has a board for these ficm's for around $125.00.
If your handy with a soldering iron you can fix it for free most likely. May have burnt a Dale resistor but those are under a dollar, I know because I have bought some myself years back.
You cannot let the batteries go bad in these trucks or you will cook the FICM.
Get Errrr fixed and your good to go..

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post #10 of 11 Old 05-16-2016, 05:01 AM
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Yeah, if you have monitor you should definitely watch you battery and FICM voltages regularly.
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