Citroen grand picasso egr problems?

[Wakey1973]

Hi. We have owned the car, a 58 plate 1.6 grand picasso, for 5 years now and it’s been a good car. This last week it’s been sluggish and not going above 3000rpm. I have used some egr cleaner and it ran ok for a few miles but then broke down. Whilst waiting for a mechanic to come out neighbour has just put his diagnostic machine on it. There were 11 old codes which he deleted and then these codes came up. Any help would be appreciated as now it’s not starting at all!! Cheers

[GiveMeABreak]

You'll find that a generic diagnostic reader won't in most cases be able to read the constructor specific codes - only the basic OBD II ones.

Pop your VIN up so I know the exact engine and ECU system you have and I'll be able to provide further relevant info to the codes you have supplied, but ideally it needs connecting up to a Lexia to be able to read any and all codes.

[Wakey1973]

Thank you. The vin is VF7**************[VIN obfuscated, can be read by forum staff]

[GiveMeABreak]

Ok, so you have the DV6TED4 with piloted 6 speed box.

Here are the fault descriptors:

Fault code P0606
Fault Description: Injection electronic control unit - ECU internal fault. There is a problem internal to the injection ECU.

Conditions of disappearance of the fault: Ignition switched on
Down-grade modes when fault present: Cutting of cruise control, Deactivation of the speed limiter
Warning lamp and/or warning message: "SERVICE" warning lamp
Symptoms: Jerking/stalling
Suspect Areas: Engine ECU


Fault code P2299
Fault Description: Accelerator pedal signal: Accelerator pedal detected as jammed (Accelerator-brake coherence). Lack of coherence between the accelerator pedal signal and the brake pedal signal or accelerator pedal jammed for 1.5 s.
Conditions of disappearance of the fault: Driving for 5 minutes
Down-grade modes when fault present: Deactivation of the electrical faults of minimum or maximum variation of the accelerator hard point signal
Warning lamp and/or warning message: None
Symptoms: Unwanted acceleration, Lack of power, Jerking/stalling
Suspect Areas: Accelerator pedal, Brake pedal, Electrical harness, Connectors

Fault code P0615
Fault Description: Controlled engine starting and stopping : Starter relay temperature excessive. The control line presents an electrical problem (overheating...) for 2 seconds.
Conditions of disappearance of the fault: Ignition on
Down-grade modes when fault present: Inhibiting of the controlled engine starting and stopping.
Warning lamp and/or warning message: None
Symptoms: None obvious
Suspect Areas: Electrical harness, Connector, Engine ECU, Starter relay

[Wakey1973]

Thanks so much for this! I will forward it to my husband now,who knows much more than I do what are your thoughts on having all of this fixed? We are wondering if it’s worth it unfortunately

[GiveMeABreak]

Be aware that some faults may also be related to others, but it does need further investigation. Also have a think to see if any work has been carried out lately and whether anything accidentally has been disturbed.

[Wakey1973]

We are still trying to find a mechanic to come out. Will it be the whole ECU to change or are there components that can be changed? Sorry for the questions! How much do you think it will all cost? No other work has been carried out recently. Thanks

[GiveMeABreak]

One thing I would NOT advise is to start replacing parts at this stage. Ideally a decent mechanic / auto electrician might be able to pin the issue down. But an engine ECU is not only expensive, but requires a matched BSI and transponder fobs.

An auto electrician may be able to check the signals from the brake switch and accelerator pedals - and determine if these are faulty before yous tart looking at the engine ECU.

It would be impossible to cost without knowing what the actual problem is. The fault codes can only act as a guide and offer several possibilities as to the cause - but can aid a competent mechanic in troubleshooting.

[Wakey1973]

Thanks very much for the information. We are still struggling to find anyone trustworthy to look at the car. We are based in Dudley West Midlands. Do you have any sort of directory for local areas please?

[moizeau]

There's an indie in Cannock called Carters Cars. He was Cit trained as a 16 yr old (Spot Garage, Chasetown) and has been on his own for must be 20 years. (The only connection I have is that I went to school with him and I used him when I was in the UK and my family and friends still do.)

[Wakey1973]

Hello again. Thank you for all of your help. We had a mechanic come out last night and he did another diagnostic. It came through with a few faults that he cleared off. The fault that stayed was internal ECU fault. When he opened the bonnet and saw that the fuse box didn’t have a cover,it hasn’t had one on since we’ve owned it, his thinking is that water has gone in the fuse box and to replace that rather than the whole ECU. There is also no power going to the glow plugs. Would you agree for us to go ahead and change the fuse box rather than the whole ECU? Many thanks

[GiveMeABreak]

There's no easy answer to this -

There are several 'boxes' in that vicinity. The main engine fuse box looks like this:

The fact that it doesn't have a cover and simply replacing the cover won't cure the problem, although I suspect that the internal elements to the fusebox (relays and electronic components) may well have suffered some corrosion or damage as a result of being exposed. SO replacing the engine fusebox may well be a good start.

There are other units around this area, various shunts boxes and supplies management boxes, but the picture above is the engine fusebox to help you identify it.

The glowplugs have a separate heating unit and these can fail or the glow plugs need replacing - luckily the HDi engines rarely need glow plugs to start, so you can ignore the fault as it's very common on HDi engines (usually fault code P1351).

[admiral51]

Could this be another C4 fusebox/BSI failure like others have reported including my own replacement ?
Looks like you have found a competent mechanic who does not want to chuck your money away.

Marc guess you have the part number for the BSI/Fusebox for the vehicle in question, i know i got mine for £170 ish delivered new and it cured all the issues i had.
I assume it is a plug and play part so no programming needed and doable at home.

Colin

[GiveMeABreak]

@ Wakey1973@ In order to get live parts data for you, I would have to ask you for a £10 min forum donation (as we are now charged for this live data), see table below for details:

A response to your question by a forum admin will require detailed vehicle information that requires you to have made a current contribution to the Forum.

Donate Further Information

...however if you look at the photo in my last post, you will see a long number down the left hand side of the fuse box module. Have a look at your own fusebox in this location and the number beginning with 98 will be the part number you need