Can anyone help please ?
I’m getting 2 fault codes relating to the additive system on my Picasso 1.6 hdi 2010. P1434 and P1435. Could anyone shed any light on a solution to this problem please ? It would appear to be an electrical fault or pump failure, but how do I find out which one ?
Thank you.
Additive not working
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Re: Additive not working
Are these related to your other post here:
viewtopic.php?p=613374#p613374
We did ask for the VIN in that post and got no reply - and will need it if you want the fault codes explained as they relate to this specific engine ECU.
viewtopic.php?p=613374#p613374
We did ask for the VIN in that post and got no reply - and will need it if you want the fault codes explained as they relate to this specific engine ECU.
Please Don't PM Me For Technical Help
Marc
Marc
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Re: Additive not working
Sorry I didn’t see that reply
My vin is - VF7**************[VIN obfuscated, can be read by forum staff]
My vin is - VF7**************[VIN obfuscated, can be read by forum staff]
- GiveMeABreak
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C3 1.6 HDi Exclusive Aluminium Grey (The Silver Hornet)
C5 MK II 2.0 HDi Exclusive Obsidian Black
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XM 2.0 Turbo Prestige Polar White
XM 2.0 SX Polar White
CX 20 Polar White
GS 1220 Geranium Red
CX 2.4 Prestige C-Matic Nevada Beige
GS 1000 Cedreat Yellow - x 5723
Re: Additive not working
Ok, so those faults both point to the additive pump itself with the additive pump seeming to be getting too hot.
Fault code | P1434 |
After sales description of the fault code | Particle filter additive system: Excessive temperature or open circuit |
Description of the diagnostics | Excessive temperature on the power stage of the additive pump |
Conditions of activation of the diagnostics | Consult the associated contexts for the Pcode forwarding conditions |
Conditions of disappearance of the fault | Ignition on |
Down-grade modes if fault present |
|
Switching on of the warning lamp and/or warning message | - |
Main customer complaints likely | - |
Suspect areas | Additive pump |
Fault code | P1435 |
After sales description of the fault code | Additive system: Additive system fault |
Description of the diagnostics | Diesel fuel additive ECU (ADDGO): Problem of communication on the CAN |
Conditions of activation of the diagnostics | Consult the associated contexts for the Pcode forwarding conditions |
Conditions of disappearance of the fault | Ignition on |
Down-grade modes if fault present |
|
Switching on of the warning lamp and/or warning message | - |
Main customer complaints likely | - |
Suspect areas | Additive pump |
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Marc
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Re: Additive not working
Thank you, I’ll order a new pump.
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Re: Additive not working
ouch! might be worth seeing if you can get a 2nd hand one - I've not heard of one failing before, so they seem to be pretty reliable. It does say 'part to be configured' so it may need some Diagbox time - and there is a diagnostic repair procedure for priming the pump in there as well.service.citroen wrote:
Richard W
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Re: Additive not working
Yeah I’ll have a look for a good used one. Where can I find info on priming and configuration ?