My fix was a simple tightening of the positive connections. Check engine light turned off. However, it didn’t fix the radio restarting during eco start. Changed the rear battery and it in turn fixed that issue. Moral of story, start with the cheaper and simpler stuff before buying unnecessary parts.
I recommend disconnecting the negative on the aux battery first because when you disconnect the starting battery, power is still running through some of the systems. I learned the hard way. I had to replace the high voltage fusebox, and I let one of the positive connections touch a bolt and it sparked.
Excellent suggestion! Thank you so much for watching! We will keep that in mind for the next time we come across this issue! Thanks for helping us with your input! Thanks for watching! Have a blessed day!
Thanks for the video. I ignored the p305f code forever. Car finally started stalling, losing power and had no power when on. I checked my batteries and the aux battery was bad. 100 dollars later with a dealer replacement battery, code gone and runs like new.
That's awesome. Thank you for watching. We are happy to be able to assist. I know it was a problem for me when it happened. But thankfully the fix was easy :)
Replaced both batteries and alternator. Engine light still on and has trouble starting cold in the morning. It worked well for a week and now it’s doing it again. Completely drained the battery last time. Also, seems to shake a little bit and RPMs rev up and down.
Is your car working good now!? I replaced my battery and I have code p3055 and p3056 I looked online they say it’s this part # 13514044 Just ordered it it has to do with the auto stop/start
So why does the engine light come on and not the battery light? So basically I need a new small battery? The code p350f says control module... is that an actual part?
The battery light pertains to the charging system, aka the alternator. The control module (Multifunction Power Converter)is responsible for the start/stop feature, and supplying power to essential systems when the engine cuts out when you're at a stop. The module is just complaining that the auxiliary battery voltage is below the minimum threshold, which is 12v.
The same thing is happening to me, I replaced the battery because it was damaged, but it turns out that when I'm driving and the vehicle does the auto stop, and when I lift my foot off the brake, the battery check engine turns on again, it comes back on. the same fault, what do you think the problem could be?
Hello I have a question about my car I have a 2017 impala and my car won’t start . 2 code we have changed the alternator and out a new battery in the front , the codes listing is p305F Dual Battery control module performance and P058D Battery sensor modal voltage monitoring performance I don’t see any videos on impala only Malibu. But I see you said on most Chevy GM Vehicles. I was wondering if you could help
I had the same code on my 2018 Chevy Impala. I pulled in the garage to check the wiring on front battery under the hood and everything looked good. I closed the hood and tried locking up the car and nothing happened. Now the car will not start or turn at all. I can't even use the button in the car to open the trunk. It's dead. Tried jumping it. It started for like 5 minutes and then just turned off. If I replace that small battery in the trunk will that solve the issue?
We have a 2018 impala with the same issue. We're you able to resolve your problems? We didn't know that there were 2 batteries also until someone told us!
Know this is a bit old, but just (again) got this code on my 2015 malibu. But both batteries tested and fine.. Engine light just comes on ocassionally, 3-4 mo. ago and just came back on, then stopped.. Any ideas??
@@westganighttrain5166 I changed both batteries and it fixed the check engine light. I think they were testing fine because they are wired together internally and together had enough juice, but both were worn out. If you never replaced, that is likely the issue. Mine lasted 6ish years, so not awful but not cheap to change both agm batteries either. Def gonna avoid auto-stop cars moving forward tho...
Thanks for taking the time to respond! I changed my aux battery and nothing changed for 2 days until this morning on my way to work I noticed that the check engine light was off.
@@westganighttrain5166 Glad that solved it! Definitely seems like a flaw in the engineering not to have a separate low-batt warning for each one, but that seems to usually be the problem when this code gets tripped. Hopefully changing them every 4-6 years will keep it at bay...
U0422 is the code thats coming up on mine.. 2013 Malibu. Says something about the Body Control Module... I keep finding different locations posted so im not entirely sure where its at...
I have 2 brand new batteries in my car. Spent over $400 yesterday getting them both swapped out. A guy at Oreillys told me i needed to drive it for a bit maybe 70 miles or so so i did just that and this code is still on. I’m so confused. Anyone else experiencing this with literal brand new batteries?
at this point we strongly suggest you take it over to the dealership and pay for a diag. it could be bad wiring as well.. not sure.. better to let a professional tell you what it is. and then look it up to see if you can do it yourself and save some money :)
My code P305F wont go away change both batteries. Changed control madule and checked all ground cables but nothing and only comes back on when my car goes into auto start mode
How do you reset the car once you’ve replaced the battery? I have a dealership telling me they are the only ones that can do it and expect a lot of money out of me
My car is not starting my check engine light is on , I start the car with a Jump every time . And I also replaced the alternator a d got a new battery I do have a second battery in the back of my truck do you think it could be that battery.
Ugh this morning my screen would go black after restart from auto stop. When I went on lunch the engine light came on. I’m assuming it has something to do with that. Taking it to auto zone to have them hook it up and see what it says. I do know I’m about due for a new main battery so who knows. I did not want a Chevy and this b.s is why😡
Yes it was the exact code lol mine needed a new main battery as it was the original one and the auxiliary battery was good. Those batteries are not cheap!
I’m having this issue now .. but my main battery is perfect .. 100% ... my smaller battery in the trunk is 84% .. I’m going through the same thing with the auto stop & then my radio restarts
@@princessc1521 if your small battery is fine it’s probably the cables are loose or bad/ worn out. I had my main battery replaced in November and it solved the engine light but screen still did this. Last month the light came on for the same code and it turned out the cables were loose and old. I got a new small battery too( even though I didn’t really need to just so I won’t have to worry about it anymore) and that solved the problem. Not super pricey for the cables.
get an obd scanner capable of erasing codes or remove both battery cables and wait around 10 minutes and then plug them back in, they should erase and reset everything.
Great video, no extra talking just straight to the point and informative. And saved me money from going to a dealership!!
thank you so much for commenting. glad we were able to help you out! hope you don't have any more issues with your Malibu :P
My fix was a simple tightening of the positive connections. Check engine light turned off. However, it didn’t fix the radio restarting during eco start. Changed the rear battery and it in turn fixed that issue. Moral of story, start with the cheaper and simpler stuff before buying unnecessary parts.
yes! thanks so much for sharing with us! really appreciate your feedback!
Does your auto stop feature work? Mine doesn't work after replacing the battery.
yeah the auto stop feature works properly.
@@HidalgoMotorsCo thanks!
I have weak crank after autostart activates and tries to turn on
I recommend disconnecting the negative on the aux battery first because when you disconnect the starting battery, power is still running through some of the systems. I learned the hard way. I had to replace the high voltage fusebox, and I let one of the positive connections touch a bolt and it sparked.
Excellent suggestion! Thank you so much for watching! We will keep that in mind for the next time we come across this issue! Thanks for helping us with your input! Thanks for watching! Have a blessed day!
@@HidalgoMotorsCo You're welcome.
Glad I could help.
@@Rock_Reggae_Riff i was just thinking that watching the video i was like holy crap this guy is gonna mess that car up haha
Thanks for the video. I ignored the p305f code forever. Car finally started stalling, losing power and had no power when on. I checked my batteries and the aux battery was bad. 100 dollars later with a dealer replacement battery, code gone and runs like new.
That's awesome. Thank you for watching. We are happy to be able to assist. I know it was a problem for me when it happened. But thankfully the fix was easy :)
FYI he DOES NOT REPLACE THE DUAL BATTERY CONTROL MODULE. Just a battery. Title does not match video.
Replaced both batteries and alternator. Engine light still on and has trouble starting cold in the morning. It worked well for a week and now it’s doing it again. Completely drained the battery last time. Also, seems to shake a little bit and RPMs rev up and down.
Is your car working good now!?
I replaced my battery and I have code p3055 and p3056
I looked online they say it’s this part # 13514044
Just ordered it it has to do with the auto stop/start
So why does the engine light come on and not the battery light? So basically I need a new small battery? The code p350f says control module... is that an actual part?
The battery light pertains to the charging system, aka the alternator. The control module (Multifunction Power Converter)is responsible for the start/stop feature, and supplying power to essential systems when the engine cuts out when you're at a stop. The module is just complaining that the auxiliary battery voltage is below the minimum threshold, which is 12v.
Did you figure it out?
When you replace the small battery in the back, did it fix the problem?
If my eco battery is bad would my car not start? Also can I just remove the eco battery all together?
Yes. The eco battery is in charge of the electrical parts of the car. The main battery keeps the car running.
So the issue its directly from the trunk battery? I got the same code for my 2014 Malibu.
Will the auto stop still work if the aux. battery is bas?
I’m having this exact same issue. I’ve replaced both batteries and checked the #18 fuse… the code and engine light won’t go away.
Did you actually get the code scanned or you are guessing.
The same thing is happening to me, I replaced the battery because it was damaged, but it turns out that when I'm driving and the vehicle does the auto stop, and when I lift my foot off the brake, the battery check engine turns on again, it comes back on. the same fault, what do you think the problem could be?
Can you do a video on changing the battery current sensor please.
hey we sold this one already, but we will make a video.
My p305f code says to replace battery current sensor???
Hello I have a question about my car I have a 2017 impala and my car won’t start . 2 code we have changed the alternator and out a new battery in the front , the codes listing is p305F Dual Battery control module performance and P058D Battery sensor modal voltage monitoring performance I don’t see any videos on impala only Malibu. But I see you said on most Chevy GM Vehicles. I was wondering if you could help
Are you still having this problem?
I had the same code on my 2018 Chevy Impala. I pulled in the garage to check the wiring on front battery under the hood and everything looked good. I closed the hood and tried locking up the car and nothing happened. Now the car will not start or turn at all. I can't even use the button in the car to open the trunk. It's dead. Tried jumping it. It started for like 5 minutes and then just turned off. If I replace that small battery in the trunk will that solve the issue?
We have a 2018 impala with the same issue. We're you able to resolve your problems? We didn't know that there were 2 batteries also until someone told us!
Know this is a bit old, but just (again) got this code on my 2015 malibu. But both batteries tested and fine.. Engine light just comes on ocassionally, 3-4 mo. ago and just came back on, then stopped.. Any ideas??
Did you get any information? I'm having the same problem as well.
@@westganighttrain5166 I changed both batteries and it fixed the check engine light. I think they were testing fine because they are wired together internally and together had enough juice, but both were worn out. If you never replaced, that is likely the issue. Mine lasted 6ish years, so not awful but not cheap to change both agm batteries either. Def gonna avoid auto-stop cars moving forward tho...
Thanks for taking the time to respond! I changed my aux battery and nothing changed for 2 days until this morning on my way to work I noticed that the check engine light was off.
@@westganighttrain5166 Glad that solved it! Definitely seems like a flaw in the engineering not to have a separate low-batt warning for each one, but that seems to usually be the problem when this code gets tripped. Hopefully changing them every 4-6 years will keep it at bay...
U0422 is the code thats coming up on mine.. 2013 Malibu. Says something about the Body Control Module... I keep finding different locations posted so im not entirely sure where its at...
I have 2 brand new batteries in my car. Spent over $400 yesterday getting them both swapped out. A guy at Oreillys told me i needed to drive it for a bit maybe 70 miles or so so i did just that and this code is still on. I’m so confused. Anyone else experiencing this with literal brand new batteries?
at this point we strongly suggest you take it over to the dealership and pay for a diag. it could be bad wiring as well.. not sure.. better to let a professional tell you what it is. and then look it up to see if you can do it yourself and save some money :)
I would look into the control module on top of the battery. This is what I am seeing online and have narrowed it down to also.
Very helpful
Does a 2013 Chevy Malibu have that battery also
My code P305F wont go away change both batteries. Changed control madule and checked all ground cables but nothing and only comes back on when my car goes into auto start mode
How do you reset the car once you’ve replaced the battery? I have a dealership telling me they are the only ones that can do it and expect a lot of money out of me
What are you referring to? The only thing you may have to reset is the time and date on the radio.
It's likely the start/stop module. Known issue.
My car is not starting my check engine light is on , I start the car with a Jump every time . And I also replaced the alternator a d got a new battery I do have a second battery in the back of my truck do you think it could be that battery.
Yes
Thanks bro 👍🏽
No problem 👍
Ugh this morning my screen would go black after restart from auto stop. When I went on lunch the engine light came on. I’m assuming it has something to do with that. Taking it to auto zone to have them hook it up and see what it says. I do know I’m about due for a new main battery so who knows. I did not want a Chevy and this b.s is why😡
hey what happened, did you ever get it fixed?
Yes it was the exact code lol mine needed a new main battery as it was the original one and the auxiliary battery was good. Those batteries are not cheap!
I’m having this issue now .. but my main battery is perfect .. 100% ... my smaller battery in the trunk is 84% .. I’m going through the same thing with the auto stop & then my radio restarts
@@princessc1521 if your small battery is fine it’s probably the cables are loose or bad/ worn out. I had my main battery replaced in November and it solved the engine light but screen still did this. Last month the light came on for the same code and it turned out the cables were loose and old. I got a new small battery too( even though I didn’t really need to just so I won’t have to worry about it anymore) and that solved the problem. Not super pricey for the cables.
@@princessc1521 did you figure it out?
How do you reset the cose thought??
get an obd scanner capable of erasing codes or remove both battery cables and wait around 10 minutes and then plug them back in, they should erase and reset everything.
What is a cose thought?
Replaced auxiliary battery check engine light still on???
Yeah you gotta clear the code and it shouldn’t come back on.
@@HidalgoMotorsCo thank you. I'll give it a whirl. Do you need to put miles on it before taking to get inspected?
hey there, yeah you need to make sure all sensors are active, takes around 60 miles. before inspection.
Do you have to replace with a vented battery?
If you buy the right battery, It will be vented...
Absolutely!? If not it could explode
No you can use an AGM battery or Gel Cell. Any smaller battery would work. Even a lithium motorcycle battery as long as amps are similar
Looks like a professional should do it