Picasso 2011 Fault codes P1403 & P1404

jayfarnsworth · Post Sat Dec 05, 2020 1:16 am

Hello everyone,

Long time reader, first time poster here and I was after some help from the collective mind

I have a 2011 C3 Picasso 1.6HDi(90) and I have recently purchased an ODBII Bluetooth connector. I also have the apps, FAP and CarScanner for my phone. The ODBII connection works great but I am get codes P1403 & P1404 persistently, they return straight away after clearing them.

P1403 - Additional heating circuit 1 EDC16C3 - Additional heating circuit 1. Short circuit to earth, short circuit to positive, open circuit or actuator.

P1404 - IAT B circuit malfunction / EGR closed position performance EDC15C2 - Additional heating circuit 2 and pre-heat EDC16C3 - Additional heating circuit 2. Short circuit to earth, short circuit to positive, open circuit or actuator.

I believe that EDC15C2 and EDC16C3 are the codes for the ECU. I assumed this is where the problem is being detected by the checking process, correct?

I have seen a few different topics with P1403 codes, none that were specific to the C3 Picasso or my engine (DV6 D), and wondered if anybody had any advice?

Just to note, I have recently changed the glowplugs, checked the output of the MAF (which was OK) and when I ran a EGR valve check via the FAP app, I got whirring noises from the EGR (I assumed that meant it was OK). The car got an ERG spray clean when I brought it 18 months ago. The car runs fine but I want to clear the codes and fix any broken parts. I am of course concerned that the EGR has a fault due to the P1404 code, but I am aware that the code could be related to something else such as a relay (from C4 forum). I also wanted to see if I could narrow things down before I started digging out the EGR, it is low down on the back of the engine and tight with cables, it looks a pig to get at.

Thanks for any help in advance!

C3CAR · Post Sat Dec 05, 2020 1:33 am

jayfarnsworth wrote: ↑Sat Dec 05, 2020 1:16 am Hello everyone,

Long time reader, first time poster here and I was after some help from the collective mind

I have a 2011 C3 Picasso 1.6HDi(90) and I have recently purchased an ODBII Bluetooth connector. I also have the apps, FAP and CarScanner for my phone. The ODBII connection works great but I am get codes P1403 & P1404 persistently, they return straight away after clearing them.

P1403 - Additional heating circuit 1 EDC16C3 - Additional heating circuit 1. Short circuit to earth, short circuit to positive, open circuit or actuator.

P1404 - IAT B circuit malfunction / EGR closed position performance EDC15C2 - Additional heating circuit 2 and pre-heat EDC16C3 - Additional heating circuit 2. Short circuit to earth, short circuit to positive, open circuit or actuator.

I believe that EDC15C2 and EDC16C3 are the codes for the ECU. I assumed this is where the problem is being detected by the checking process, correct?

I have seen a few different topics with P1403 codes, none that were specific to the C3 Picasso or my engine (DV6 D), and wondered if anybody had any advice?

Just to note, I have recently changed the glowplugs, checked the output of the MAF (which was OK) and when I ran a EGR valve check via the FAP app, I got whirring noises from the EGR (I assumed that meant it was OK). The car got an ERG spray clean when I brought it 18 months ago. The car runs fine but I want to clear the codes and fix any broken parts. I am of course concerned that the EGR has a fault due to the P1404 code, but I am aware that the code could be related to something else such as a relay (from C4 forum). I also wanted to see if I could narrow things down before I started digging out the EGR, it is low down on the back of the engine and tight with cables, it looks a pig to get at.

Thanks for any help in advance!

Hi

Preheat codes are common to show with no symptoms. The pre-heat on the common rail systems are used in post heat mode most of the time. You say the glow plugs were changed, which is very unusual as they often don't show problems.

Citroen will change the relay and the glow plugs if either of the faults for glow plugs or relay shows. A bad relay will take out the glow plugs and bad glow plugs can take out the relay, but as I said, they don't usually get changed because they have little effect.
Why were they changed? and were they tested after or before removing and was the relay tested/changed?

If you get non specific, general codes from the generic scanners, use lexia tool to get the correct description based on the vehicle connected at the time (based on VIN/RPO).

Our lexia topic is here

jayfarnsworth · Post Sun Dec 06, 2020 1:32 pm

Hi,

Thanks for replying, I didn't expect anyone to answer that quickly!

The glow plugs were changed by me, just because I had an appropriate spare set from a different car and this car was relatively unknown to me. The resistances were a little high on the old ones, nothing alarming but I want to change them out to make sure it wasn't the plugs themselves.

Do you think that the glow plug relay could be another suspect here? I would have expected a specific code to come up for that. Given the codes, I was expecting something related to the EGR valve. The glow plug relay hasn't been checked/change but that can be my next step if you recommend it.

I have been considering getting a Lexia, my problems are 1) the cost and 2) trying to get it to run in a virtual machine (I only have one laptop and it has Win 10 on it). Do you think the cheap Lexia knockoffs from the Chinese on-line markets are any good? Any known tales of woe?

C3driver52 · Post Sun Dec 06, 2020 4:01 pm

jayfarnsworth wrote: ↑Sun Dec 06, 2020 1:32 pm I have been considering getting a Lexia, my problems are 1) the cost and 2) trying to get it to run in a virtual machine (I only have one laptop and it has Win 10 on it). Do you think the cheap Lexia knockoffs from the Chinese on-line markets are any good? Any known tales of woe?

I use the chinese version, of course. I don't think any home DIYer would pay full price for the proper one.

It works fine for mine, I run it on an old, spare laptop, not my new one. It gave the old laptop a new use in life. I would search out an old laptop that runs windows7 if you are not comfortable installing a windows7 virtual machine in windows 10.

You will want a full-chip version of lexia to ensure maximum compatibility with the later cars.

Yes, there are plenty of horror stories, but they come from corrupt DVDs or not following the instructions supplied and expecting it to 'just work' without having to do any understanding of the process.

Ozvtr · Post Sun Dec 06, 2020 11:03 pm

Where ever you get the LEXIA from, make sure you can contact them and that they will accept returns or exchange. Unfortunately the quality can be a bit dodgy.

jayfarnsworth · Post Wed Dec 09, 2020 2:22 pm

Thank you for the advice folks, I shall look into getting some sort of Lexia.

However, for the moment (and on the basis that money won't be great until next year) I'm still not sure where to go with the codes I have.

I'm going to check over the plug relay at the weekend and make sure it is working properly. However, I still would have expected a separate code for the relay being bad. I have checked over most of the connections and they look OK.

Is there anything else anyone can think of causing these fault codes?

jayfarnsworth · Post Thu Dec 10, 2020 3:10 pm

Just add a further bit of intrigue, I have found the P1403 and P1404 on the ODB codes site (the codes are specific to Citroen and list the C3 Picasso 2009 and 2013, I presume these are dates onward rather than those specific years, i.e., when electronics type change overs have occurred).

It lists the following;

Citroen P1403 Carbon Canister Shut Off valve Control Circuit Electrical
Description: OBD-II Trouble Code Description for P1403 Citroen
Carbon Canister Shut Off valve Control Circuit Electrical

Citroen P1404 Heated Catalyst Current too High During Heating (Bank 2)
Description: OBD-II Trouble Code Description for P1404 Citroen
Heated Catalyst Current too High During Heating (Bank 2)

Can anybody add any detail to these parts, what might be causing these codes or what might need investigating?

routemaster1 · Post Thu Dec 10, 2020 3:55 pm

jayfarnsworth wrote: ↑Thu Dec 10, 2020 3:10 pm Just add a further bit of intrigue, I have found the P1403 and P1404 on the ODB codes site (the codes are specific to Citroen and list the C3 Picasso 2009 and 2013, I presume these are dates onward rather than those specific years, i.e., when electronics type change overs have occurred).

It lists the following;

Citroen P1403 Carbon Canister Shut Off valve Control Circuit Electrical
Description: OBD-II Trouble Code Description for P1403 Citroen
Carbon Canister Shut Off valve Control Circuit Electrical

Citroen P1404 Heated Catalyst Current too High During Heating (Bank 2)
Description: OBD-II Trouble Code Description for P1404 Citroen
Heated Catalyst Current too High During Heating (Bank 2)

Can anybody add any detail to these parts, what might be causing these codes or what might need investigating?

Citroen P1403 Carbon Canister Shut Off valve Control Circuit Electrical

This one is a bit odd as I thought you only had a carbon canister on a petrol car.

C3CAR · Post Thu Dec 10, 2020 4:00 pm

Connect lexia/diagbox for the correct descriptions of the codes present.

jayfarnsworth · Post Thu Dec 10, 2020 4:22 pm

Citroen P1403 Carbon Canister Shut Off valve Control Circuit Electrical

This one is a bit odd as I thought you only had a carbon canister on a petrol car.

That's a fair point, probably an issue with Googling the codes there then.

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