Nox sensor codes
Thread Starter
Member
Joined: Nov 2016
Posts: 90
Likes: 9
From: Barrie, On
GL320 / R350
Nox sensor codes
Good afternoon all.
I went to do my emissions test this morning and on the way, the CEL popped on. the codes are: 147600, 147700, 153600, 153800.
I already replaced the downstream sensor 2 years ago. Now both are faulty?
Does anyone know anything about this scenario or do I really need to buy two new NOX sensors? That's big money! Not to mention the difficulty. That job sucks without a lift and a brontosaurus to break the torque.
Thanks in advance
Dan
I went to do my emissions test this morning and on the way, the CEL popped on. the codes are: 147600, 147700, 153600, 153800.
I already replaced the downstream sensor 2 years ago. Now both are faulty?
Does anyone know anything about this scenario or do I really need to buy two new NOX sensors? That's big money! Not to mention the difficulty. That job sucks without a lift and a brontosaurus to break the torque.
Thanks in advance
Dan
Junior Member
Joined: Sep 2018
Posts: 30
Likes: 0
GL350
Hi, I’m new to MB but in other brands I have experienced the upstream sensor fail and cause the downstream false failure as it’s reading was out of spec. Changing the upstream corrected both codes. I would try changing the upstream first before doing both.
