ESP - Ecu mute

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Vilpo
Posts: 8
Joined: 06 Jan 2018, 10:30
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ESP - Ecu mute

Post by Vilpo » 07 Jan 2018, 20:56

So i get randomly esp light on and this fault in the esp-system, ecu mute. No p-code or nothing, just "ecu mute", when i read fault codes in Lexia.
This is meaning a ecu communication fault im assuming?
Usually this fault always comes right after starting the car and taking off. And the light goes away when the car is restarted.
I also have an EGR-valve issue that is giving a fault code in the engine control unit. Could this be related?
Right now im waiting for the new egr-valve to get rid of that fault..
Oh yea, forgot to mention the car is Citroen C5, 1.6hdi -04.

Thanks for help,
Ville

RichardW
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Joined: 07 Aug 2002, 17:12
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Re: ESP - Ecu mute

Post by RichardW » 08 Jan 2018, 13:23

Vilpo wrote:
07 Jan 2018, 20:56

I also have an EGR-valve issue that is giving a fault code in the engine control unit. Could this be related?
Right now im waiting for the new egr-valve to get rid of that fault..


Yes! In a bizzare bit of programming, initial EGR valve faults put the ESP (and hand brake light in cars with electronic handbrakes) light on - but do not put the engine management light on :lol: I tried various fixes on our Picasso, including a new underbonnet fuse box, before I finally worked out the EGR link, and replaced the valve, which put the light out!

Vilpo
Posts: 8
Joined: 06 Jan 2018, 10:30
x 1

Re: ESP - Ecu mute

Post by Vilpo » 08 Jan 2018, 23:23

RichardW wrote:
08 Jan 2018, 13:23
Vilpo wrote:
07 Jan 2018, 20:56

I also have an EGR-valve issue that is giving a fault code in the engine control unit. Could this be related?
Right now im waiting for the new egr-valve to get rid of that fault..


Yes! In a bizzare bit of programming, initial EGR valve faults put the ESP (and hand brake light in cars with electronic handbrakes) light on - but do not put the engine management light on :lol: I tried various fixes on our Picasso, including a new underbonnet fuse box, before I finally worked out the EGR link, and replaced the valve, which put the light out!

Ok! I remember reading somewhere a relation between these, but wasnt sure if it could be the same on citroens.. :o
Well this is good to know, so i know should expect it to go after replacing the egr.
And yes, the check engine wont light up anymore, after clearing up a couple of other issues. Even though i have the egr codes stored, just the random esp light..
Thanks for the info!
I'll post back after i have the egr replaced.

Ville