ECU fault with NOX Sensor cabling

Faults and Technical chat for the Citroen C4 Cactus
blackcountrycactus
Posts: 171
Joined: Sat Jan 06, 2018 10:40 pm
Location: west midlands

Re: ECU fault with NOX Sensor cabling

Post by blackcountrycactus » Thu Nov 12, 2020 4:22 pm

Earlier in the post you confirmed it wasn't the adlue tank , so now it is
spacyzuma wrote:
Thu Nov 12, 2020 12:36 pm
I just got a quote from Robins & Day (Glasgow).
I'm being charged £252 for 2 sets of diagnostic tests, and a total of £1483 to fix the car. They say the problem is the Urea Reservoir which needs to be replaced.

At this rate, I'm thinking of selling the car. I'm tired of all this.
All black 1.6hdi flair with pano-2016

spacyzuma
Posts: 9
Joined: Wed Sep 18, 2019 6:08 pm

Re: ECU fault with NOX Sensor cabling

Post by spacyzuma » Sun Nov 15, 2020 7:44 pm

blackcountrycactus wrote:
Thu Nov 12, 2020 4:22 pm
Earlier in the post you confirmed it wasn't the adlue tank , so now it is
spacyzuma wrote:
Thu Nov 12, 2020 12:36 pm
I just got a quote from Robins & Day (Glasgow).
I'm being charged £252 for 2 sets of diagnostic tests, and a total of £1483 to fix the car. They say the problem is the Urea Reservoir which needs to be replaced.

At this rate, I'm thinking of selling the car. I'm tired of all this.
Yes, based on new information from the Citroen dealer.
Previously, the garage (who have worked on the car several times) told me the fault was with the wiring and not the Adblue/urea tank/reservoir.
Silver 2015 Citroen C4 Cactus 1.6L BlueHDi Feel 100

blackcountrycactus
Posts: 171
Joined: Sat Jan 06, 2018 10:40 pm
Location: west midlands

Re: ECU fault with NOX Sensor cabling

Post by blackcountrycactus » Sun Nov 15, 2020 8:58 pm

spacyzuma wrote:
Sun Nov 15, 2020 7:44 pm
blackcountrycactus wrote:
Thu Nov 12, 2020 4:22 pm
Earlier in the post you confirmed it wasn't the adlue tank , so now it is
spacyzuma wrote:
Thu Nov 12, 2020 12:36 pm
I just got a quote from Robins & Day (Glasgow).
I'm being charged £252 for 2 sets of diagnostic tests, and a total of £1483 to fix the car. They say the problem is the Urea Reservoir which needs to be replaced.

At this rate, I'm thinking of selling the car. I'm tired of all this.
Yes, based on new information from the Citroen dealer.
Previously, the garage (who have worked on the car several times) told me the fault was with the wiring and not the Adblue/urea tank/reservoir.
Good luck let us know the outcome, having a diesel 2016 makes me aware of the problem and the cost :shock:
All black 1.6hdi flair with pano-2016

Skinsta37
Posts: 1
Joined: Mon Dec 28, 2020 3:13 pm

Re: ECU fault with NOX Sensor cabling

Post by Skinsta37 » Tue Dec 29, 2020 10:41 am

i have cactus 2016 model diesel has been fine with no issues except now service ,engine management, urea lights have come on so i thought i would top up the urea tank .did this took the car for a drive all lights still on until i got back home switch engine off restarted only light remains now is engine management light.
so used the obd reader picked up codes U029D and P2200 so there nox senses not communicating with each other. where are they situated ?

Jayo
Posts: 4
Joined: Wed Oct 28, 2020 6:24 pm

Re: ECU fault with NOX Sensor cabling

Post by Jayo » Tue Jan 12, 2021 7:49 am

Not even 3 months of getting my car fixed at a cost of near £500 all my lights are back on. UREA, Engine management and Service light all on. Got to be a design flaw or manufacturing fault, how can so many of us be having this same problem? Come 9am I'll be back on the phone to the dealers😠

Jayo
Posts: 4
Joined: Wed Oct 28, 2020 6:24 pm

Re: ECU fault with NOX Sensor cabling

Post by Jayo » Wed Jan 13, 2021 3:42 pm

Took the car to the dealers and guess what? Yep another fault found. This time its the UREA injector apparently, so thats another £295 ive got to cough up. Nearly £800 in less than 3 months this has cist now😠

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