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Old 03-03-16, 07:02 AM   #1
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Default ESP/ASR Fault **SOLVED**

Hi,

I'm Nick im new to the Peugeot forum. I just thought I'd share with you a fault that I had on my Peugeot 407 shortly after buying it last month.

Intermittently when I broke a warning would come on the dash saying ESP/ASR fault along with a triangle on the instrument panel with a swerving car with a cross through it.

Quite an annoying fault as it was happening more and more often. I gathered it was a fault with one or several of the ABS sensors as that is what most if not all the searches come up with on Google. This fault arising also meant I could not use cruise control because of a speed control fault or something like that.

One of my friends at the weekend followed me as we were on a trip out. When we arrived he said my brake lights weren't always coming on and when they did they were flashing. So I went down to euro car parts and for 19 picked up a brake light sensor which is oddly fitted on the passenger side of the car. I put it on and hey presto TOUCH WOOD!!! all faults have now gone. So PLEASE guys if you have this issue try the brake light switch/ sensor first as this is a vastly cheaper repair than replacing ABS sensors which potentially are not the cause of the issue.

Thanks
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[FONT="Comic Sans MS"][SIZE="3"][COLOR="RoyalBlue"]Nick Chatt
Peugeot 407 SE 2.0HDi 90,000[/COLOR][/SIZE][/FONT]
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Old 03-03-16, 07:21 AM   #2
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Welcome aboard. We'd normally recommend a Planet diagnostic, which would bring up the fault code for a faulty brake switch.

The same problem also plagues the Citroen C4:

FAQ : 205 : C4 Brake Switch causing ESP/ABS fault or Speed limit error message, Switch replacement guide. - C4 - DS4 Owners

A faulty switch can also bring up a cruise control fault, as it did on my 307 and 407.

Its interesting how parts you wouldn't think interconnect would cause a fault, but this is why we always stress a diagnostic check.
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Old 03-03-16, 01:52 PM   #3
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I had the same problem but this happened after I had an aftermarket egr value replaced. The garage had to replace it for a genuine part, and the fault never returned.


Quote:
Originally Posted by nickspug407 View Post
Hi,

I'm Nick im new to the Peugeot forum. I just thought I'd share with you a fault that I had on my Peugeot 407 shortly after buying it last month.

Intermittently when I broke a warning would come on the dash saying ESP/ASR fault along with a triangle on the instrument panel with a swerving car with a cross through it.

Quite an annoying fault as it was happening more and more often. I gathered it was a fault with one or several of the ABS sensors as that is what most if not all the searches come up with on Google. This fault arising also meant I could not use cruise control because of a speed control fault or something like that.

One of my friends at the weekend followed me as we were on a trip out. When we arrived he said my brake lights weren't always coming on and when they did they were flashing. So I went down to euro car parts and for 19 picked up a brake light sensor which is oddly fitted on the passenger side of the car. I put it on and hey presto TOUCH WOOD!!! all faults have now gone. So PLEASE guys if you have this issue try the brake light switch/ sensor first as this is a vastly cheaper repair than replacing ABS sensors which potentially are not the cause of the issue.

Thanks
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