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NOX sensor
#1
Hi. I have apparently got an intermittent/erratic nox sensor 2 bank 1.

Anyone point me to the location of this sensor please.

Geoff

It's a 2018 1.5 Blue HDI
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#2
(25-02-2022, 09:21 PM)Guanock Wrote:  Hi. I have apparently got an intermittent/erratic nox sensor 2 bank 1.

Anyone point me to the location of this sensor please.

Geoff

It's a 2018 1.5 Blue HDI

Hi. You should easily find it following the exhaust pipe. I've attached a pic


Attached Files
.docx   nox sensor.docx (Size: 521.36 KB / Downloads: 33)
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#3
Thanks for that, I was not sure if it was the first or second sensor. They are silly money!!!

Geoff
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#4
Geoff,
Did you get an engine warning light and text on the dashboard?
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#5
First to light up was the diagnostic engine light, followed shortly by the spanner and a message on the speedo dash panel. It also defaulted the centre display to a map showing the nearest Citroen dealers.

I topped up with 7 litres of adblue and after about 5 miles all warnings disappeared.

The OBD fault code was P22A2 which apparently is a fault with: NOX 2, bank 1. Circuit intermittent/erratic.

Geoff
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#6
Thank you for the info , it will hopefully be helpful to others who may suffer the same issue
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