[davetg]

I am not familiar with your car but on the Pug 308 the unit was fixed to the bodywork by a couple of bolts at the bottom of the unit. The bolts could not be seen without moving the wiring loom to one side. If you look at the last picture on the Aliexpress link you can see what looks like a mounting bracket on the RHS of the picture.

I would not put a link between the two posts - it may do more damage. Monitoring the voltage at the posts when the fault is present and not present will give a good indication if the BPGA is faulty.

 

[funmonkey100]

I am not familiar with your car but on the Pug 308 the unit was fixed to the bodywork by a couple of bolts at the bottom of the unit. The bolts could not be seen without moving the wiring loom to one side. If you look at the last picture on the Aliexpress link you can see what looks like a mounting bracket on the RHS of the picture.

I would not put a link between the two posts - it may do more damage. Monitoring the voltage at the posts when the fault is present and not present will give a good indication if the BPGA is faulty.

That's ideal I will have a look, I will check for voltages from the post to GND when it crashes and when its working and see if there is a change. I guess if there is a change between the crash and normal operation its more likely going to be the BPGA.

Setup looks the same.

 

[wlwchung]

Thanks so much for sharing all these information. I personally am facing a similar problems with my Peugeot 308 (2015). I got it in January, and the car has run only 27000 miles till now.

About a month ago, I start getting the battery charge fault message intermittently. Since I have a 12 months insurance coverage I just went straight to the garage. At first they thought it's me disconnecting the battery incorrectly, which I was guilty of. However the signal kept returning, and after many test run and diagnostic check, they believe the problem is with the BSI.

The insurance company decided to send a mechanic to come take a look first before approving the BSI replacement and the garage mechanics believe since it's a BSI issue, it should be safe for me to continue driving it until the coming Monday, which is the day the insurance company mechanics scheduled to come take a look....

BOOOm. Sunday afternoon, after taking a walk in the park with my family, the car refuses to start. Fortunately my garage is just around the corner, I called and it just took them 10min to come. The car must be fun to tease me, decided to resume service while the garage mechanics arrived. Now I start thinking it's more a BPGA issue rather than BSI, since the problem is getting more persistent recently, and it finally got to the point that it won't start.... The garage mechanic says he will take a look together with the insurance mechanics and see. What are your thoughts on this?

 

[funmonkey100]

Thanks so much for sharing all these information. I personally am facing a similar problems with my Peugeot 308 (2015). I got it in January, and the car has run only 27000 miles till now.

About a month ago, I start getting the battery charge fault message intermittently. Since I have a 12 months insurance coverage I just went straight to the garage. At first they thought it's me disconnecting the battery incorrectly, which I was guilty of. However the signal kept returning, and after many test run and diagnostic check, they believe the problem is with the BSI.

The insurance company decided to send a mechanic to come take a look first before approving the BSI replacement and the garage mechanics believe since it's a BSI issue, it should be safe for me to continue driving it until the coming Monday, which is the day the insurance company mechanics scheduled to come take a look....

BOOOm. Sunday afternoon, after taking a walk in the park with my family, the car refuses to start. Fortunately my garage is just around the corner, I called and it just took them 10min to come. The car must be fun to tease me, decided to resume service while the garage mechanics arrived. Now I start thinking it's more a BPGA issue rather than BSI, since the problem is getting more persistent recently, and it finally got to the point that it won't start.... The garage mechanic says he will take a look together with the insurance mechanics and see. What are your thoughts on this?

That what started to happen to my C4, I have replaced the BPGA with a new one from AliExpress and it did seem to fix the problem. With the new one I had to transfer some fuses over from the old one to the new one. This is the one I ordered BPGA (9675350380) That replaced my 9675350280.

EDIT: Just to add to this the problems I had was the mirrors wouldn't come out when I unlock the car and it sometimes failed to start and had to wait a few minutes and it would start. Other things I noticed as well as I would get a fog light error that I could remove by turning them on and off the error disappeared(SERVICE Light).

 

[davetg]

It will be difficult for garage or insurance mechanic to diagnose the problem if it is not present when they inspect the car on Monday. Show them this thread so they can make a judgment on whether the problems you have had match. Let us know how you resolve the problem as it may help others.

 

[Ian M Davis]

They should be able to see the fault if they run a global diagnostics. The way the Peugeot diagnostics works is that it keeps a log of historical faults which usually don't clear until you use a diagnostic tool to clear them.

 

[davetg]

When my BPGA failed the stored diagnostic codes did not help that much - plenty of errors probably because things powered by the BPGA relay were not working but none that indicated a faulty BPGA - the BPGA thinks it is working but is not able to detect its relay is faulty.

 

[funmonkey100]

When my BPGA failed the stored diagnostic codes did not help that much - plenty of errors probably because things powered by the BPGA relay were not working but none that indicated a faulty BPGA - the BPGA thinks it is working but is not able to detect its relay is faulty.

The same happened to me when I used Diagbox the only faults I had was the other items that failed to load up as I guess the BPGA crashed during boot up if that's the best way to put it.

 

[Ian M Davis]

When my BPGA failed the stored diagnostic codes did not help that much - plenty of errors probably because things powered by the BPGA relay were not working but none that indicated a faulty BPGA - the BPGA thinks it is working but is not able to detect its relay is faulty.

The best diagnostic tool for a Peugeot is the Lexia 3 with Diagbox software. Other tools are known to give wrong results. The BPGA has been reported as a master relay fault. However, even with the Lexia 3 it often can't give you the exact fault. You need have some knowledge of the car. If there is long list of failed ECUs you can usually relate it to a single item. I would expect an experienced mechanic to be able to pinpoint a faulty BPGA. The BPGA has two parts one part goes through the relay the other part is directly connected by a set of fuses. It should be possible to work out from the list of failed ECUs if the BPGA is culprit.

One thing the PBGA does is to turn off the 12V connection to the OBD connector. This means some OBD testers will not work at all if the BPGA is faulty.

 

[Mark biggs]

When replacing the BPGA does it have to be coded to car or just a straight swap. Thanks

 

[davetg]

No coding was needed when I changed mine.

 

[Gillian Stokes]

Hi guys, I am having the exact same problem but with a 508. My nephew has said he will try a fit a new BPGA for me. Does anyone have a good video of how to get the part off? Much appreciated.

 

[Ian M Davis]

Hi guys, I am having the exact same problem but with a 508. My nephew has said he will try a fit a new BPGA for me. Does anyone have a good video of how to get the part off? Much appreciated.

Does this help

 

[Gillian Stokes]

Thank you that's really appreciated.

 

[Alberto744]

When my BPGA failed the stored diagnostic codes did not help that much - plenty of errors probably because things powered by the BPGA relay were not working but none that indicated a faulty BPGA - the BPGA thinks it is working but is not able to detect its relay is faulty.

Hi Davetg,
I have a 308 1.6 BLUEHDI year 2016, I've been some issues with on the screen pop up "fail chager battery" and service, error code B1624 73, "fault relay closed". just no coming all the time, when I switch off the engine for a while them disapear from the screen and maybe apperars in two or tree weeks again.
Is wourthed to change myselft the BPGA Unit, or maybe is the battery issue battery car start 14.5V, car off 12.5V?? I need to check when appear the fault again.
Is still working fine, you new BPGA ??, Could you please send the LINK where you bought the replacement unit. Do you find was easy to change the BPGA unit by yourselft??

 

[davetg]

Hi Alberto,
The new BPGA is working well. I got it from ebay. Fitting is not difficult but there are a lot of wires so worth taking pictures and labelling the wires.

 

[Ian M Davis]

Hi Davetg,
I have a 308 1.6 BLUEHDI year 2016, I've been some issues with on the screen pop up "fail charger battery" and service, error code B1624 73, "fault relay closed". just no coming all the time, when I switch off the engine for a while then disappear from the screen and maybe appears in two or three weeks again.
Is worthed to change myself the BPGA Unit, or maybe is the battery issue battery car start 14.5V, car off 12.5V?? I need to check when appear the fault again.
Is still working fine, you new BPGA ??, Could you please send the LINK where you bought the replacement unit. Do you find was easy to change the BPGA unit by yourself??

Before you change the BPGA you should look at the Battery Charge Status Unit. This is a small box that sits on the negative terminal of the battery and monitors the battery- see #7 of Battery charge status unit This unit gets its power from the BPGA but connects to the BSI via data bus.

If this unit detects a problem the BSI should do some load shedding of non essential services such as air-conditioning.

 

[Alberto744]

Before you change the BPGA you should look at the Battery Charge Status Unit. This is a small box that sits on the negative terminal of the battery and monitors the battery- see #7 of Battery charge status unit This unit gets its power from the BPGA but connects to the BSI via data bus.

If this unit detects a problem the BSI should do some load shedding of non essential services such as air-conditioning.

Thanks, Ian for your response, I've been checking and testing the "Battery Charge Status Unit" by DIAGBOX v1.9, and look ok to me, is obvious this fault (photo1) was not present and this time when I've testing, please see the screenshot to see the fault (sorry is in Spanish version, translate photo 2).

 

[Ian M Davis]

Thanks, Ian for your response, I've been checking and testing the "Battery Charge Status Unit" by DIAGBOX v1.9, and look ok to me, is obvious this fault (photo1) was not present and this time when I've testing, please see the screenshot to see the fault (sorry is in Spanish version, translate photo 2).

I have attached two documents for the 308 T9. One shows the wiring diagram for the stop-start system and the other details of the BPGA.

If you look at the BPGA diagram you will see there is one relay the controls the power to about half the fuses the rest of the fuses connect directly to the battery. If the BPGA relay fails it cuts power to a lot of things. For example if you have fold in mirrors if the BPGA relay fails the mirrors will not deploy when you unlock the car.

I included the stop-start diagram because it shows most key components:
1032 BPGA
1031 Battery status monitor
1320 Engine ECU
1021 reversible alternator
1010 starter motor
Can you confirm that your car has a stop-start system. If so it means you have a reversible alternator which is designed to act as a 3 phase starting motor and generator. This a far more complex system than the basic alternator.

EDIT
There is one other important block -1012. This is the stop start system. Peugeot call this "the centralised voltage maintaining system". The reverse alternator needs to switch from being a starter motor to being a generator. I suspect your problem relates to this function.

 

[Alberto744]

I have attached two documents for the 308 T9. One shows the wiring diagram for the stop-start system and the other details of the BPGA.

If you look at the BPGA diagram you will see there is one relay the controls the power to about half the fuses the rest of the fuses connect directly to the battery. If the BPGA relay fails it cuts power to a lot of things. For example if you have fold in mirrors if the BPGA relay fails the mirrors will not deploy when you unlock the car.

I included the stop-start diagram because it shows most key components:
1032 BPGA
1031 Battery status monitor
1320 Engine ECU
1021 reversible alternator
1010 starter motor
Can you confirm that your car has a stop-start system. If so it means you have a reversible alternator which is designed to act as a 3 phase starting motor and generator. This a far more complex system than the basic alternator.

EDIT
There is one other important block -1012. This is the stop start system. Peugeot call this "the centralised voltage maintaining system". The reverse alternator needs to switch from being a starter motor to being a generator. I suspect your problem relates to this function.

Hi Ian M Davis,

Yes, I have fold-in mirrors, and working fine when I unlock the car. I have a STOP-STAR system and is NOT working for a while just I can see ECO light blinks.

So what I can test or check??, where is this module or Unit "the centralised voltage maintaining system"??, The alternator gives 14.4v when the engine is on. The battery level this morning before the contact engine was 12.3V, after the contact 11.9V. so maybe is battery issues????


Please see this forum for similar faults they change the Battery protection unit cause the problem Electrical Service System Fault | Peugeot Forums

Many Thanks, Ian.