C5 1.6 HDI ABS/ESP FAULT,DEPOLLUTION SYSTEM FAULTY

crosser69 · Post by **crosser69** » 10 Nov 2010, 22:14

bought this high mileage c5 1.6hdi 2006.
not had any problems for 3000 miles after i cleared out the strainer in the sump.
slowed down and pulled over the other day and abs and esp light come on,abs light stays on when you start the car and then goes off when you go over 20mph.abs and esp light comes on when i put it into reverse or am slowing down to put the car on the drive.
then yesterday 'depollution system faulty' light has come on,it wont go off ive even disconnected the battery overnight.
then today 'particulate filter oil level low' light come on.
any help please on hwhere to start looking?

coastline taxis · Post by **coastline taxis** » 10 Nov 2010, 22:52

youve got no choice other than to start with a diagnostic. although it does sound like you need your fap filter cleaned/changed and the Eolys fluid topped up and the counters in the ecu reset

crosser69 · Post by **crosser69** » 11 Nov 2010, 07:55

where abouts is the fap filter?
ive heard about the fluid and fluid will cost about £70.

citroenxm · Post by **citroenxm** » 11 Nov 2010, 08:10

FAP is in the exhaust, underneath, near the front, were the pipe is all fat....

IF you can get it off, and all four bolts undone which hold it together, then you can Steam Clean the filter out!!!

I know this as my mate has VERY sucessfully done it on his 04 C5 2.2....

The hardest part was the 4 bolts - its not a massive problem, if you drill a broken one out you can then fit a Nut and Bolt back in place...

Paul

crosser69 · Post by **crosser69** » 11 Nov 2010, 08:26

great stuff,my mate is going to have a look tomorrow to read all of the faults and try and fix them 1 by 1.
i will mention the filter in the exhaust and see if i can get it booked in to sort

Wideboy · Post by **Wideboy** » 16 Nov 2010, 16:08

If the 'low diesel additive level' warning is up then i'd suggest you budget more than £70 to have that topped up,especially if a garage is doing it.From memory i think you can buy a 4.5/5 litre kit and do it yourself far cheaper if you feel that way inclined.You will still need to get the ecu reset though.As for steam cleaning the FAP i too have had success in having this done but some people do frown upon it as the waste water is claimed to be bad for the environment etc.Personally i couldn't care less as the savings far outweigh any misgivings i may have about it.

crosser69 · Post by **crosser69** » 16 Nov 2010, 17:02

Champion,thanks for your replies,have managed to get the de pollution faulty light off,got a abs sensor to put on and that will sort the abs/esr light.
can the low particulate oil light be reset with a decent snap on diagnostic machine/tool?

cachaciero · Post by **cachaciero** » 16 Nov 2010, 17:33

crosser69 wrote:Champion,thanks for your replies,have managed to get the de pollution faulty light off,got a abs sensor to put on and that will sort the abs/esr light.
can the low particulate oil light be reset with a decent snap on diagnostic machine/tool?

Don't like to rain on your happiness but generally the ABS/ESR light comes on because of the engine failure .
The scenario is this: The ABS ?ESR system requires to know what torque the engine is putting out. This data comes from the engine ECU now when the engine ECU has a fault the Torque data is not valid so the ESP/ABS has now lost one of it's main data inputs so.........ESP/ASR fault

cachaciero

crosser69 · Post by **crosser69** » 16 Nov 2010, 20:17

its been on a machine while the light was on and its came up with the o/s front abs wheel sensor,particulate oil level low,thats the only 2 faults that showed up,the abs only comes on when i am putting the car up the curb with the o/s wheel which makes sense to me

bali7605 · Post by **bali7605** » 25 Nov 2010, 13:37

Hello,

Sorry it is a bit off the topic but i have a situation here where my friend tried to chip the ECU with some dodgy mapping, on his 307 HDI, when i arrived PP2000 didnt communicate with the ECU so i decided to get a replacment, forunatly i've found one with all numbers matching, and i've got the VIN with it. I bougth the security code for both and wanted to program the new ECU in but, i couldnt find the way to reset the replacment ECU. Is there someone who could help me please!!
Just tell me how to reset and adopt.

Thank you,

bali

cachaciero · Post by **cachaciero** » 25 Nov 2010, 21:23

bali7605 wrote:Hello,

Sorry it is a bit off the topic but i have a situation here where my friend tried to chip the ECU with some dodgy mapping, on his 307 HDI, when i arrived PP2000 didnt communicate with the ECU so i decided to get a replacment, forunatly i've found one with all numbers matching, and i've got the VIN with it. I bougth the security code for both and wanted to program the new ECU in but, i couldnt find the way to reset the replacment ECU. Is there someone who could help me please!!
Just tell me how to reset and adopt.

Thank you,

bali

I get the impression that the replacement ECU is a secondhand unit if so my understanding is that the VIN at least and probably the security codes cannot be re-programmed, they are not in flash memory but "one time programmable" ROM. The only way of using tihs would be to replace the rest of the electronics from the donner car or at least those that use the VIN code as part of their normal operation, BSI as a minimum.
Another alternative may be to replace the memory chip in the unit with a new one, one of the repair companies may be able to help with this.

cachaciero

French Car Forum

C5 1.6 HDI ABS/ESP FAULT,DEPOLLUTION SYSTEM FAULTY

C5 1.6 HDI ABS/ESP FAULT,DEPOLLUTION SYSTEM FAULTY

2.0L HDI Pug 307

Re: 2.0L HDI Pug 307