2014 FORD DIESEL 6.7 | A P0620 MUST SEE BATTERY LIGHT ON |

[@1967davethewave]

I'm a fleet mechanic with an electric utility. We have over 300 F550's all with 6.7 engines in them. As you stated, the alternators are extremely durable. So today when a 550 came in and the operator was complaining about the battery light being on and that a mechanic at another one of our service centers had replaced 1 of his batteries (?) and told him the light would reset on it's own (it didn't), I was scratching my head as to what the problem could be. The day mechanic took the truck in for me to work on tonight. As he was a Ford tech before coming here 11 years ago I listen to his advice. He suspected the inverter battery might be bad. So I pulled the truck in this evening and dug out the inverter battery. It was manufactured in August of 2016 so I replaced it. I started the truck and after about a minute or two the charge light came on. I checked the alternator output and it was 14.3 volts. So I broke out the laptop and scanned it and came up with the dreaded P0620. That led me to you and after crawling underneath the truck and digging the alternator control wire out of the harness (it's slightly different on a 2017 F550 than your example) sure enough, the wire broke in half when I pulled on it and it was all green and corroded. So what would have taken me all night with a meter, Ford shop manuals and probably a couple of calls to some other Ford specialist mechanics I had it fixed in about 30 minutes including a 10 minute test drive. THANK YOU!!!!

[@PowerStrokeTechTalkwARod]

🤘🤘🤘🤘🤘

[@chasesterlington2943]

Been running mine for over a year with the light on. Everyone tells me it's alternator and won't believe me when I say it isn't. Now I can fix it myself finally! Thanks!!

[@PowerStrokeTechTalkwARod]

Wheeeew glad you watched. Tell those who told you wrong!

[@wcgantex]

I cannot thank you enough. battery light was on for my 2016 f350 and just as picture in your video but it was the yellow wire and was so corroded that when I started moving it around it broke. rosin core solder and heat shrink with piece of good quality 18 ga copper mtw wire and bingo. no more battery light and engine surging while idle. THANK YOU!!!

[@PowerStrokeTechTalkwARod]

Frigggin aye 🙌🙌🙌

[@stevenfuchs2548]

You are the best no doubt! How could anyone who has a 6.7 not be subscribed to your channel?

[@PowerStrokeTechTalkwARod]

I know right!!!🤷‍♂️🙋‍♂️

[@JimmyZ408]

The only compliant I have is the video was to short! Good to know this, Thanks

[@PowerStrokeTechTalkwARod]

Lol sry broski

[@loft306]

Exactly LOL

[@jgatti8742]

Damn, straight to the point with the visual inspection. Impressive

[@PowerStrokeTechTalkwARod]

All i do!!!!!!!😉

[@brentammons5736]

Super thanks for the videos. Helping me make the decision to buy a 6.7 550. Kind of gun shy about Ford diesels. Great job. Keep it up.

[@PowerStrokeTechTalkwARod]

Buy it! You got me🙌🙌🙌

[@cmore4979]

You should do a video on installing a second altanator!!

[@stevemazzarella7212]

I only have 1 6.7 in my fleet, thanks for the tip

[@JamesDavis-jo9tk]

I recently replaced the alternator on my 97 7.3 after 185.000 miles. The bat light was on and off at random due to sporadic overcharging. Wiring is all still solid and I don’t have to worry about burning up my batteries now.

[@PowerStrokeTechTalkwARod]

😁

[@BarnStangz]

This was happening on my 7.3 last year, check all the battery connections really good, cleaned them REALLY good and then lubed 'em... So far so good... Hope it'll last a bit longer, I'm almost at 190K miles. At least it's an easy alternator to swap.

[@PowerStrokeTechTalkwARod]

Hellz yea

[@codypike7124]

Very helpful video found it quick thank you

[@ricardorodriguez-se7tp]

You must get a lot of those with the light on you went straight to it LOL.

[@orville58]

You make it look so easy dudezki

[@PowerStrokeTechTalkwARod]

😁😁😁

[@crperformancetucker5065]

Not all heros wear capes

[@Ominousstang]

i hope the best to this channel to blow up🤘🏾 10/10 content

[@PowerStrokeTechTalkwARod]

Thanks broski

[@tonyedge540]

Thank you so much you saved me alot of work my next step would be to do pin outs at the computer

[@PowerStrokeTechTalkwARod]

Told ya!!!!

[@3374jj]

I'm gonna check mine tomorrow.

[@jordankduran]

Have you seen this on 2018. Same issue on my 2013.

[@PowerStrokeTechTalkwARod]

Yes

[@johnstraight4238]

That was the wire the red wire on passenger side for mine 2012 ford f250 6.7l thanks man

[@PowerStrokeTechTalkwARod]

Thanks 4 sharing

[@cobrabuilder9336]

Been there and fixed that. Got the T-shirt 2011 f350 418000 miles

[@jesusavila9763]

Any prevention before this happens? Maybe more electrical tape?

[@PowerStrokeTechTalkwARod]

Could, they are bare there from the get go

[@JasonTheMunicipalMechanic]

Great tip thank you

[@edschulze7469]

I got a 0625 code yesterday so went to checking the wires on the alternator. The red and yellow checked, however, the violet does not have a complete circuit. Went to wire channel on front passenger side of vehicle and checked there, had continuity to the alternator from there, but not up to the pin. I can't find any chaffing in that area, and unable to get to the wire in the harness without tearing the hole thing apart. Am I missing another spot in that area where the wire might break? So frustrating.

[@PowerStrokeTechTalkwARod]

Gotta keep at it....how you think i feel....is my truck done yet...is my truck done yet....can i come get it.....

[@joshuanickels4364]

Your a damn genius, found a broken wire after taking the alternator off and replaced on my 16, 6.7……exact same spot. P0620….

[@PowerStrokeTechTalkwARod]

We dont lie

[@kstoj]

Do you have any tips for a 7.3 gas ford with dual battery and dual alternator, same p0620 code

[@noahadim]

Hey A arod, My battery lights on and i checked the pigtail at the slternstor and all is good there, but still no charge. Does that mean bad alternator?

[@PowerStrokeTechTalkwARod]

Sry pal

[@thebaker5837]

Perfect video. Only problem for me now is that there was no corrosion for me in the area, but I messed with the wires a little bit. The light stayed off for a minute but turned on after running for a bit. Any other tips I could follow along after that?

[@PowerStrokeTechTalkwARod]

U need to follow the pin point test...

[@JBThax]

How much would a Repair like this cost?

[@PowerStrokeTechTalkwARod]

Depends

[@darkenfly32]

Good 2 know 👍.... Awesome video

[@iloveburittos]

Good to know!! Wonder if that wire leads to pin #1 voltage reference cowl or pin #2 signal return cowl? I've removed a 10amp fuse #45 and voltage jumped from 13.4volts to 14volts. But battery light is still on. 🤔

[@PowerStrokeTechTalkwARod]

No they ABSOLUELTY do not. Watch the other videos in the battery playlist & u will learn

[@aztlankin1]

Thank you sr. My 2011super duty f350 have the battery light on ..i change the battery but the light still on.today i was thinking to replace the alternator too.

[@PowerStrokeTechTalkwARod]

Yea, good luck with that bud

[@hawkins4387]

I have to have this issue with my truck but haven’t found any broken wire. Brand new alternator and good batteries. 13.4-13.7 volts coming from the alternator. Battery light on. Where should I look for some chaffing? It’s a 2009 F350 6.4

[@PowerStrokeTechTalkwARod]

Silly videl is for 6.7. Not even close to that pile of 6.4 set it on fire brah and runnnnn

[@blackopsrocks]

Go back and tag your older vids with the P codes it makes search easier and you will definitely get alot more random hits.

[@Ranalla651]

I have a 2014 battery light on. Have not scanned it. Voltage at idle is 12.7 or so. At both batteries and alternator stud. Bump the rpms up a second and voltage goes to 13.5 or higher at alternator and batteries. Occasionally the battery light will go off. I assume weak alternator? I am a chrysler tech but its a family memebers truck.

[@PowerStrokeTechTalkwARod]

Most likely not

[@Ranalla651]

@@PowerStrokeTechTalkwARod you think wiring as well? I will get the code read at work and then follow alldata. As long as info is avaliable I am very fluent with voltage drop, loading circuits etc. Just seemed like alternator at first

[@PowerStrokeTechTalkwARod]

You have a wiring problem just like in the video I have a few other videos with the same problem just in different spots

[@zachking6545]

Arod, thanks again for taking my call this week and for the awesome info! Another banger!

[@PowerStrokeTechTalkwARod]

Hotlines open anytime!!!!!! See ya nxt week

[@sunman12345678]

Good one brother..

[@brianmoraczewski3130]

Thanks So Much! I have a 2018 F-350 only 44,000 miles on it. The dash was going blank while I was driving down the road and it said service charging system. When we tested the alternators with a volt meter it said one was giving 16V and the other was .2 and it changed constantly. The dealer said it was a software issue and the couldn't help me! Do you believe that shit!? I was about to take it to another dealer Monday but thought Id google the problem first. The broken red/yellow wire was right where you said it would be. I couldn't believe it when I found it inside the harness. Thanks again. Problem solved

[@PowerStrokeTechTalkwARod]

Im so glad to have helped you save money. Help me help you....check my Paypal out & share me please!!!!

[@Canadian750]

I have a 2012 f350 6.7 run 3 new wires soldered and heat shrinked , and battery light on , so the frustration continues, read to check fuses and also the $450 Canadian that is no longer available circuit breaker fuse thing beside the passenger side battery

[@jaredtrainer1991]

My battery light was intermittent, I have a volt meter on a gauge and was bouncing between 14.5 and as low as 12.9. Shut the truck off and back on and the meter was reading a contestant 14.5 volts . I would think if it was a wire Iike that would be more consistently an issue right?

[@PowerStrokeTechTalkwARod]

No...watch these Ford 6.7 Diesel BATTERY LIGHT VIDEOS: kzbin.info/aero/PLO4T4Ez-ZZaQNROJNDaD4T9WldCjExM16

[@PowerStrokeTechTalkwARod]

Theres a few spots. U shld be able 2 find them. I literally just did 1 two hours ago!!

[@jaredtrainer1991]

That was totally it same exact spot as this video, you saved me so much headache man i truly appreciate your effort in posting this video

[@PowerStrokeTechTalkwARod]

Thanks so much. Not pressuring but if you liked what you saw, if you choose, make a donation of your choice to my channel. Thanks for watching!! www.paypal.me/pttwarod

[@jaredtrainer1991]

@@PowerStrokeTechTalkwARod subscriber for life

[@michaelkaylor4779]

I’ve got the battery light but is also high idling at 799 rmps. Any clue what that could be ?

[@johnwalker863]

Thats a quick fix, and of course thanks for the tech tip. Having said that, if that wire's in bad shape, why not replace the entire length of it from alternator to pcm or battery... seems like it could be a problem in future? Or is it just in this one spot @ bend under engine & we assume no corrosion elsewhere?

[@jerryknorr679]

Good video boy u always make it look so easy. What is the cause of this issue. Thanks AROB

[@PowerStrokeTechTalkwARod]

Chafe spot in the harness

[@virgilhoefels5089]

Hey, to hx for the vids. Super helpful. Gonna rip mine apart this weekend.... Or could I not just run all new wires in a better spot and splice them at firewall?

[@PowerStrokeTechTalkwARod]

You will find you problem & fix. I have 3 videos

[@loft306]

You say never replace Alternators haha🤣 I agree, The alternator was putting out good 14.4 I had an 08’ 6.4l (job 2(20th nov. 2014)) and right (right wheel well)in the wheel well the wire got nailed, replace one wire on the Three way Alternator(my buddy brokers and remans alternators got knollage and parts) Did that 4 times in 8 years (The harness was just in the rite spot for getting nailed by crap). The truck I had before the super duty was 92 F150 And the alternator breakdown was the plug

[@PowerStrokeTechTalkwARod]

Thanks so much for sharing pal 😉🤝👊✌

[@loft306]

PowerStroke Tech Talk w/ARod I love shRing but But I think techs don’t like to hear this stuff but u do, love it.! And so far every vid of yours Rocks keep it up! I will email u if I get stuck on my truck, but peeps come to me(I keep up on the tsb’s etc...)but I do my own with a lot of knowledge from others. And thanks for being awsome and furthering the Knollage of the rest of us. Nailed it!

[@jacobkurpowic6515]

My code is p0625 could this still apply?

[@PowerStrokeTechTalkwARod]

This whole playlist!!

[@conrayecameron4029]

Very good 👍

[@BarnStangz]

Crazy, one little red wire, ruining your day... MacGyver likes to cut the red wire too, or was it the blue wire... Thanks for the video son!

[@PowerStrokeTechTalkwARod]

🤣😭😪🤣😭

[@mrOnlinePolice]

Have this problem on a 2018 F250. I tested the wires with a meter as well as with a 32watt bulb. All rings out good. Bulb lights up full brightness. But battery light is still on. Getting anywhere between 12.5-13.9V. No CEL. What could it be?

[@PowerStrokeTechTalkwARod]

All 3 wires tested good...

[@mrOnlinePolice]

@@PowerStrokeTechTalkwARod yes. All 3 tested good. Light was full brightness on all 3 wires. Disconnected the plug and now I get 13.7V charge, not cycling. Engine runs smooth. No light on the dash

[@mrOnlinePolice]

@@PowerStrokeTechTalkwARod fixed. All 3 wires were ringing out good. But wire on pin 3 and wire on pin 2 were shorted to each other.

[@PowerStrokeTechTalkwARod]

😭😭 but i thought u tested the wires with a 32 watt bulb

[@franciscomendoza5697]

Where's the chafing or corrosion points for the 6.4? I have the same code.

[@PowerStrokeTechTalkwARod]

Time for an ALT

[@loyalty3443]

I have a 2009 Mazda 6. Generator output is 13.5V but battery's light stays on. Out put stays the same whether the alternator is plugged in or not. Changed alternator,ecm 13.5v output and battery light still on.

[@PowerStrokeTechTalkwARod]

Ok...

[@chaladin1985]

What if my 2015 f450 have 2 alternators??

[@lorelopez642]

Hello, I have a 2010 6.4L and I have the battery light on at times and all the markers turn off and on until the radio turns off, what will be the problem?

[@PowerStrokeTechTalkwARod]

🤷‍♂️

[@codyrogan4514]

Great video, followed my PPT to a tee and recommended a PCM. Thanks for saving my ass.

[@PowerStrokeTechTalkwARod]

Friggin atta boii💪💪

[@gobdeep]

Aww yeah, 2014. My baby. :-) . But, the bigger question is, how to PREVENT this? Does it need some slack in the electrical tape? How do I keep my ‘14 from getting to this point?

[@PowerStrokeTechTalkwARod]

If i were you ALL I would cut every zip tie in that trough!!!

[@gobdeep]

PowerStroke Tech Talk w/ARod this is helpful. Will check and fix it tomorrow!

[@timbo_slice4053]

Hey ARod what do you think about Ol' brother Bill from PowerstrokeHelp.com?

[@zugattitt6876]

👍

[@bob_frazier]

Battery light I could ignore. BUT. Without this wire the computer doesn't recognize the alternator and sends the demand for half the amperage that it should. Right? Thats the function of this wire, sort of a com line between the two units.

[@PowerStrokeTechTalkwARod]

In a nutshell yea

[@Imoverherenow299]

Yyoooo I’m famous now!

[@PowerStrokeTechTalkwARod]

😭😭😭😭

[@culbyj3665]

wiring gauge is 2 small. current and voltage is proportional to resistance. higher current in these is creating heat which is causing insulation breakdown which then creates corrosion , and then slap in the beat down from a work truck and uve got a failure point let alone that trough which seems common...

[@PowerStrokeTechTalkwARod]

....no its not. The friggin zip ties....that ding a ling installed created a chafe point that ultimately caused the concern....ur gettin too technical..

[@johnwalker863]

I have to agree with CulbyJ. If truck is only used for mall crawingl & soccer practice with occasional trip to deer lease, may never have a problem...if you work out of the unit & beat the hell out of it daily, the wiring heats up and won't last.

[@johnwalker863]

These trucks are engineered to have an expiration date. I believe they refer to it as automotive manufacturing obsolescence or some such nonsense. Wiring, electrical, mechanical parts etc....they are priced like they're going to last 20 yes but they dont

[@Detroittruckdoctor55]

Oh wow i found it

[@PowerStrokeTechTalkwARod]

Seeeeeee

[@hellrazer4565t]

I deleted my first 6.7 today lol fun fun

[@sebastianvazquez9967]

Having a hard time finding where the hell this harness isnat

[@PowerStrokeTechTalkwARod]

What

[@sebastianvazquez9967]

@@PowerStrokeTechTalkwARod figured it out. Alernator wires were melted by the turbo. Spliced and soldered them and boom no more light and truck doesn’t almost cause me to die on freeway

[@markthomas7270]

You really did not say what is causing that issue there, how or why that wire is becoming broken at that spot. As I could not see any metal that it was rubbing on there, or is that zip tie put on so tight from the factory & cuts the wire. Is that the issue? And if it is and has been over the years, I hope it has been reported to Ford so that would be fixed in the manufacturing of that Wire Harness.

[@PowerStrokeTechTalkwARod]

Chafe in the harness. Cash repair, not warranty, Ford wouldn't knw on this 1

[@KendrasEdge757]

Nice! Very short for a change 😂 so for those of us that WILL get, as the way they run these harnesses it’s gonna happen eventually, these issues, if we fix it ourselves do we need to then bring it to the dealer to get the codes deleted or will they disappear on there own?? And the battery light. Appreciate it brotha!

[@PowerStrokeTechTalkwARod]

Nope theyll clear out homie

[@sammyhassan3797]

Get rid of the music i cant hear you man !! Good job though ✌️✌️

[@PowerStrokeTechTalkwARod]

...it was there to over power the copy righted back ground music that ding dongs were playin

[@dwtrksvc]

Had to change my like to a dislike once I found out how you glossed.over removing the plug from the alternator and how much of a pain in the ass it is. Other than that on a DIY scale it's a pretty good video. I would suggest at least removing the steering damper for easier access to troubleshooting the wiring.

[@PowerStrokeTechTalkwARod]

Really

[@jstrickland9052]

How do you unplug it, I gave up. I also gave up from removing alternative I unbolted it and could remove it. It wouldn't come lose.

[@PowerStrokeTechTalkwARod]

I dunno bro