Code P0410 and most of the fuses do not get voltage in both engine bonnet and under the steering wheel fuse boxes

Tiny
HAWAI1907
  • MEMBER
  • 2005 PEUGEOT 407
  • 2.2L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 151,000 MILES
Hello, I have the car listed above petrol with auto transmission. The problem I am facing is that the car works properly, but most of the fuses don't get voltage in both engine bonnet and under the steering wheel fuse boxes. Autopilot is not working, heated seats are not heating, rear wiper is not working, I diagnosed the car with OBD Bluetooth scanner tool and there is the code P0410 which in my opinion is the Air system as it also shows in the scanner, so I checked the fuse for the air pump which is also not getting voltage. I am not in my country and living abroad where it's so hard to trust mechanics. I would like to fix things on my own in general and I don't know where to start since I'm a bit nerd with electrics. I thought of checking the relays but I don't know which relay is my target.

Also there is weird thing in engine bonnet. The fuse box. I am adding the image of it but It's like some plastic melted and dried there. I checked it with screw driver, I could push it but nothing more. Any clue is appreciated! Thanks in advance.
Wednesday, December 4th, 2019 AT 1:25 PM

15 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 46,357 POSTS
The does look strange over the fuse panel. Can you remove the plastic cover and see what it is? Upload a new picture of it? Also it does sound like the ignitions witch is not working correctly. Please let us know what you find.
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Sunday, December 8th, 2019 AT 12:24 PM
Tiny
HAWAI1907
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Before I go further, I just want to ask one simple (maybe silly as I mentioned me being nerd with vehicle electrics). Question, is it possible that some fuses don't show voltage because I do the test with ignition completely off? Some relays/fuses requires ignition to be on in order to supply power to them?
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Sunday, December 8th, 2019 AT 12:49 PM
Tiny
KEN L
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Yes, turn the key on and retest the system. Here is a guide to help you test for power:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Please run down this guide and report back.
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Monday, December 9th, 2019 AT 9:54 AM
Tiny
HAWAI1907
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Thanks Ken, I will do that test asap and report back.
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Monday, December 9th, 2019 AT 1:38 PM
Tiny
KEN L
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Please let us know what you find. We are interested to see what it is.
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Wednesday, December 11th, 2019 AT 9:39 AM
Tiny
HAWAI1907
  • MEMBER
  • 8 POSTS
Hey Ken, so I did the test only in the cabin part under the steering wheel fuse box with ignition on and I noticed that some fuses did actually get the voltage and some others remained asleep. The one that I marked with yellow (its 15 amp, took out the fuse to test with ohm) is still numb. Next to it red 10 amp did light the tester after I turned ignition on. But I noticed one more thing that where is the blue mark on the left had voltage but there wasnt anything in there, I just checked with the tester pen and it has voltage. What kind of fuse should I put there? Because there wasnt any fuse in there since I got the car. Tomorrow Im going to test the engine compartment and gonna update you. If you know anything about that empty spot I would very much like to know.

Thanks for the answers!
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Friday, December 13th, 2019 AT 2:21 PM
Tiny
KEN L
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Thanks for the image. It looks like the fuse places that are empty are for accessories that are not used or featured in this car. Can I ask does the engine start and run?
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Monday, December 16th, 2019 AT 10:40 AM
Tiny
HAWAI1907
  • MEMBER
  • 8 POSTS
Yes it does perfectly. I'm driving it every day to work and home. The only error message I get is the one with Depollution which is P0410 coded. Couldn't find the location of Secondary Air Injection which OBD showed when I scanned the car. Another thing I have noticed that fuel consumption is also very high. Also might be about electrical related to Oxygen sensors. I'm checking the oil level everyday to see if there is oil leak or burn as well.

Thanks for the answers.
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Monday, December 16th, 2019 AT 10:51 AM
Tiny
KEN L
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Does the car have a MAF sensor? Sorry we don't have this car in the states so we don't have particular information on it. If so I would replace it and service the throttle bore. here are two guide to help walk us through the repair:

https://www.2carpros.com/articles/throttle-actuator-service

and

https://www.2carpros.com/articles/how-to-replace-a-mass-air-flow-sensor-maf

Then clear the codes.

https://youtu.be/ahK_eucFi-k

Please run down these guides and report back.

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Monday, December 16th, 2019 AT 1:09 PM
Tiny
HAWAI1907
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Thanks Ken. You've been very helpful and I will definitely run down those guides as soon as I'm done dealing with this clunk noise comes from the steering wheel. Happened today so didn't have time to check it out physically so I am checking online. About the guides I will report back.
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Wednesday, December 18th, 2019 AT 1:27 PM
Tiny
KEN L
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Sounds good please do, have a great holiday !
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Thursday, December 19th, 2019 AT 12:06 PM
Tiny
HAWAI1907
  • MEMBER
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Hello again. Sorry It took me long time to get to my car because of work. Well I didn't have to go through all those suggestions you have given because me and my friend have noticed that my car doesn't have Alternator! How cool is that? Turns out that the dealer just took it away from the car and did some electrical ticks. (I'm assuming since the car runs normally and doesn't give any obvious symptoms of absence of the alternator such as not cranking etc.) We did notice two more things and I'm going to add image here to show you guys. Its very weird electrical connections in front of the engine (I will mark to show you) and I'm assuming those are the the tricks. I know you guys are not familiar with Peugeot but I thought you would still know much more than I do :)

Thanks a lot in advance!
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Saturday, January 18th, 2020 AT 6:09 AM
Tiny
HAWAI1907
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Now that I noticed again I might be wrong about alternator. On second image there is that copper colored solenoid with silver cover down there, is it the alternator? If it is, then what should be in that spot I marked? I'm devastated.
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Saturday, January 18th, 2020 AT 6:15 AM
Tiny
KEN L
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You are okay, that is the alternator it could be where the AC compressor goes though.
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Saturday, January 18th, 2020 AT 3:20 PM
Tiny
ITULAH AKHERE
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HAWAI1907, your car can't run well without the alternator otherwise known as generator. The sport you marked as alternator sport is pooling sport and in some Peugeot model, which is where the steering pump is located to be driven by sapient belt. However, this model of 407 has an electromechanical steering pump ( to your left, close to radiator expansion container) Your alternator is right that device you see with copper wires inside opposite the electromech pump. Once again, no gasoline or diesel engine vehicle can run without an alternator.
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Tuesday, June 21st, 2022 AT 2:54 AM

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