Esp Enertia Mudule

[Guest La Durande]

HI,

 

Does anyone have a clue where the location of the ESP sensor is fitted on a 2001 2.2HDi Estate.

 

Shows the unit in the Citroen spares list but not the physical location on the vehicle.

 

All to do with the usual ESP/fault and anti pollution etc.

 

Also have another fault showing Diesel filter blocked yet I have just had a service and the fuel filter in the engine bay was replaced. Is there a filter in the additive tank which may give this fault??

 

Await rplys

[techbod]

its been covered

http://www.citroen-owners-club.co.uk/citro....php?t3927.html

 

also a good site for information

http://www.scribd.com/doc/2530474/Citroen-Technical-Guide

[Guest La Durande]

its been covered

http://www.citroen-owners-club.co.uk/citro....php?t3927.html

 

also a good site for information

http://www.scribd.com/doc/2530474/Citroen-Technical-Guide

 

What I really require to know is the physical positon of the ESP sensor is fitted on a 2001 2.2HDi Estate.

 

Also is there a filter which is monitored in the fuel tank or additive tank/pump

[techbod]

ESP = ( electronic stability program ) not a sensor this is effected when you have an emissions problem and its part of the main ECU but your problem was covered in the links I supplied and down to EGR valve in most cases needing cleaning out,

the FAP filter is in front of the catalytic converter which requires cleaning approx 50k miles and done by the dealer as you need diagnostic equipment to do it and the other tank is called the eolys tank which requires filling with liquid GOLD j/k but extremely expensive and it holds 1 gallon £100 ish,

you need to go down the street of cleaning things out like the EGR valve to see if that corrects the problem first ( Im not saying what it costs at the dealer to fill/sort the FAP and reset the computer ) I don't want you to have a heart attack :D

 

your problem is emissions related

[Randombloke]

ESP = ( electronic stability program ) not a sensor this is effected when you have an emissions problem and its part of the main ECU but your problem was covered in the links I supplied and down to EGR valve in most cases needing cleaning out,

 

Higher end C5s have an ESP/ASR system which can be disabled by use of the button to the LHS of the gear knob/shift controller. When the ESP/ASR fault is up, the ESP/ASR disable light comes on and the handling/ride of the vehicle changes. This change is identical to the feeling you get if you manually disable the ESP/ASR using the button.

 

The ESP/ASR system does have a number of sensors, if necessary I'll have a look in the manual and post more details. I'm not 100% sure but in theory they also use ABS sensors to check relative speeds of wheels......

 

Whilst a lot of the time I've seen ESP/ASR faults to go hand in hand with anti pollution problems, this is not always the case in my experience. On a car with a full ESP/ASR system it too can have faults.

 

See here for info from iannez:

 

ESP/ASR, can it be enabled?

 

ASR is a form of traction control, more info here:

 

Acceleration Slip Regulation

 

the FAP filter is in front of the catalytic converter which requires cleaning approx 50k miles and done by the dealer as you need diagnostic equipment to do it and the other tank is called the eolys tank which requires filling with liquid GOLD j/k but extremely expensive and it holds 1 gallon £100 ish,

 

FAP changes are dependent on the age of the vehicle. AFAIK the earliest ones are 50k, later ones 75k and it may be possible that with some of the 04->08 vehicles it's 120k.

 

you need to go down the street of cleaning things out like the EGR valve to see if that corrects the problem first ( Im not saying what it costs at the dealer to fill/sort the FAP and reset the computer ) I don't want you to have a heart attack :D

 

There are sensible independents who can do the job in an affordable way. YMMV. I'd also agree that the EGR valve and connecting tubing should be checked out. I would also check connections to all sensors, where possible.

 

your problem is emissions related

 

In this case I agree with you but want to point out that on a car with the ESP/ASR system, it's possible to have faults with this on its own and they are not tied to anti pollution.

[techbod]

and all this can be deleted because its failed and now a cash cow for citroen/pug psa group

[techbod]

your answer is very cool random bloke I couldn't have explained it better my self, HDI is not my cuppa tea I must admit but your answer has got me interested to look at it a bit more.

 

 

I edited that last answer out because it was inappropriate :D

[Randombloke]

the idea is to help not hinder? your answers are book related, experience will kill you 7/24

 

I've had real life ESP/ASR fault warnings not connected to any form of anti pollution problem. Car engine/performance not affected. Ride is. It's a 2.2 HDi 02 Exclusive.

 

The idea is to share knowledge so that people will be able to learn and diagnose their own faults.

 

and all this can be deleted because its failed and now a cash cow for citroen/pug psa group

 

Depreciation values of PSA cars reflect poor public confidence in them and cost of repairs. I think most of us know that.

 

If you are a diagnostic consultant, isn't cars going wrong a cash cow for you? If they didn't go wrong....................

 

To get back to the subject of ESP/ASR, there are a number of sensors, measuring steering wheel angle, lateral acceleration (via gyrometer) etc., and allowing under or oversteer to be calculated and corrected by brake application on the relevant wheel. The ECU for ESP/ASR is combined with ABS and lives under the main engine ECU and between the battery and the brake servo.

 

The manual does not give locations for these sensors, so if you wanted to trace them some wire following might be needed.

 

ESP/ASR was an option on the 2.0 HDi SX and was fitted to all 2.2 HDi in the first phase (-> 04).

 

ESP = ( electronic stability program ) not a sensor this is effected when you have an emissions problem and its part of the main ECU

 

ESP (+ASR) is a system that's optional and is part of the ABS system. It has sensors. Sensor location is not documented in the RTA manual.