Multiple Fault Warnings

[227duke]

Any ideas on this conundrum would be appreciated. My 2005 C5 2.0 Hdi has just informed me that there are faults on my anti-pollution system, ESP/ASR system and speed control system. All at preciseley the same moment. The engine management light is now illuminated and I get the warnings repeatedley flashing up on the screen. I really can't imagine that my luck is so bad that all three of these systems would simultaneously have crashed, but the car wants to tell me otherwise. Any thoughts?

[Randombloke]

I really can't imagine that my luck is so bad that all three of these systems would simultaneously have crashed, but the car wants to tell me otherwise. Any thoughts?

 

Battery condition or battery connections. See advice elsewhere from Citroen techs.........

[227duke]

Battery condition or battery connections. See advice elsewhere from Citroen techs.........

 

Thanks, I'll go down that route.... can't see any relevant posts on condition or connections of battery though....any pointers?

[227duke]

Thanks, I'll go down that route.... can't see any relevant posts on condition or connections of battery though....any pointers?

 

 

The solution.......... It was the fuel cap, of course......

 

The clever old C5 has (wouldn't you know it) an electronic fuel cap, which sends a message to the main computer every time you replace the cap. This prompts the car to inject some of the Elyos fluid into the mix. So, last August, when hooning along in France I noticed that my fliller cap flap kept, well, flapping. Turns out it was the little spring gadget which opens the flap when you press it, then locks it shut when you push the flap shut. It only wanted to be open. This device was very easy to pull out of it's hole in the metalwork, which meant that my filler flap has stayed shut, even though it's slightly tricky to open (a credit card works just fine). What I didn't know was that there was a wire associated with the item I removed, which wasn't actually attached but was "located next to it". When I pulled the open/close device out, I set this wire free. This morning, the inevitable happened and the wire broke. This told the computer that there was a problem dispensing the Elyos fluid, which consequently caused the anti pollution system, speed control system and anti lock/skid systems to shut down just for safety's sake, and kicked in the 'limp home' just for good measure.

 

Thank heaven for main dealers (well sometimes, anyway). Tomsons of Tamworth fitted me in this afternoon, stuck the beast on their computer device, identified the problem and Sean their chief techie cum sales manager etc set to and found the offending wire. Having re-joined it and re-set the ECU to where it was, I was on my way within the hour. Brilliant.

 

Happy bunny now.....

[coastline taxis]

was the bill resonable

[DaveHerns]

was the bill resonable

Is it the fuel filler flap that triggers the warning to dispense EOLYS fluid ? I thought someone said there were magnets in the filler cap itself ?

[227duke]

Is it the fuel filler flap that triggers the warning to dispense EOLYS fluid ? I thought someone said there were magnets in the filler cap itself ?

 

 

It is the cap itself which, via the magnets fitted to it, trigger the fluid dispenser. My mentioning the filler flap related to a problem with the closing/opening spring device, the removal of which set the wire free which transmits the signal from the magnets.....which eventually resulted in the wire breaking.

[DaveHerns]

It is the cap itself which, via the magnets fitted to it, trigger the fluid dispenser. My mentioning the filler flap related to a problem with the closing/opening spring device, the removal of which set the wire free which transmits the signal from the magnets.....which eventually resulted in the wire breaking.

If you took the magnets out of the filler cap ,would your EOLYS fluid last longer ? If you do long fast runs as a matter of course , would this be a problem ?

[mlkey]

If you took the magnets out of the filler cap ,would your EOLYS fluid last longer ? If you do long fast runs as a matter of course , would this be a problem ?

 

Not using the Eolys fluid would probably prevent the DPF from regenerating, as the temperature required would not be sufficient, even with the faster runs, eventually blocking the filter. In other makes (Mazda, Land Rover to name a couple), they use an additional injection of diesel when the regen is required. If the driver stops driving in the required style during the regen, normally over 2k RPM and top gear for 20ish minutes, the regen aborts, and results in the oil level rising due to the addition of diesel. Not a good way to do things, it is even mentioned in the handbook on Mazda!

[Guest Adrian Lee]

<!--quoteo(post=37934:date=Mar 29 2009, 10:50 PM:name=227duke)--><div class='quotetop'>QUOTE(227duke @ Mar 29 2009, 10:50 PM) 37934[/snapback]</div><div class='quotemain'><!--quotec-->It is the cap itself which, via the magnets fitted to it, trigger the fluid dispenser. My mentioning the filler flap related to a problem with the closing/opening spring device, the removal of which set the wire free which transmits the signal from the magnets.....which eventually resulted in the wire breaking.<!--QuoteEnd--></div><!--QuoteEEnd-->

If you took the magnets out of the filler cap ,would your EOLYS fluid last longer ? If you do long fast runs as a matter of course , would this be a problem ?

 

I understand that disabling this sensor would cause more problems. I drive an 03 HDi which was my late Father-in-Laws'. He lost the filler cap at an early stage and fitted a 'cheepo' replacement. At 24000 miles the additive was gone. Local dealer sorted this (expensive) and fitted correct cap (not expensive). All seems well now, many miles on.