Please someone help me... Code P2629
Thread Starter
Senior Member
Joined: Apr 2014
Posts: 425
Likes: 15
e63 amg w212 6.3
Please someone help me... Code P2629
Hey, i've come into a small issue,
I had my CEL come on, m156 amg ran too rich, changed the pre cat sensors which were causing the issue, I replaced both for 2 new ones.
Now the car is saying:
0563 - G3/3 (left o2 sensor before TWC (KAT)) : Open circuit (P2629).
Has anyone seen this problem before?
Could the wiring harness be melted from the exhaust or anything?
Could it be the new o2 is faulty?
could it be the wiring harness or the plug pin?
I hope someone has the answer for me..
Im really stuck in a rut with this e63 amg m156.
I had my CEL come on, m156 amg ran too rich, changed the pre cat sensors which were causing the issue, I replaced both for 2 new ones.
Now the car is saying:
0563 - G3/3 (left o2 sensor before TWC (KAT)) : Open circuit (P2629).
Has anyone seen this problem before?
Could the wiring harness be melted from the exhaust or anything?
Could it be the new o2 is faulty?
could it be the wiring harness or the plug pin?
I hope someone has the answer for me..
Im really stuck in a rut with this e63 amg m156.
Thread Starter
Senior Member
Joined: Apr 2014
Posts: 425
Likes: 15
e63 amg w212 6.3
left exhaust pipe, blowing bit of smoke, running rich dumping a lot of fuel.
Got my new o2 sensor pre cat today, if anyone in the future have this issue i may narrow it down for you.
If its wiring harness issue will post that as well.
Got my new o2 sensor pre cat today, if anyone in the future have this issue i may narrow it down for you.
If its wiring harness issue will post that as well.
Super Member
Joined: Nov 2010
Posts: 746
Likes: 48
From: Queens,NYC
2014 E63s 1993 mazda rx7 on Boost
might be a bad injector on that bank
They do have injector issues.. How many miles?
let it idle and if you are handy pull the plugs on that bank and look if one of them is really bad and that will be the injector with the issue. I would change all 8.
let it idle and if you are handy pull the plugs on that bank and look if one of them is really bad and that will be the injector with the issue. I would change all 8.
Junior Member
Joined: Apr 2019
Posts: 16
Likes: 2
From: Miami, FL
666WHP and 804WTQ Stage 3 2017 C63 AMG W205
Not that I am aware of (since no CEL related to injectors), will buy the tool to pull the plugs today as I dont have the right now.
More info on this issue here:
https://mbworld.org/forums/c63-c63s-...mg-2019-a.html
More info on this issue here:
https://mbworld.org/forums/c63-c63s-...mg-2019-a.html
Super Member
Joined: Nov 2010
Posts: 746
Likes: 48
From: Queens,NYC
2014 E63s 1993 mazda rx7 on Boost
sorry..I posted incorrect
Check to make sure non of the pins are pushed back into the connector on car harness and try to trace as much as possible looking for damage.If you had any work done try looking where they did that work for damage.
How many miles on the car might need plugs anyways.. before you change plugs if you do.. Clean the TB first and intake with old plugs on and swap our plugs if you decide to change them.
How many miles on the car might need plugs anyways.. before you change plugs if you do.. Clean the TB first and intake with old plugs on and swap our plugs if you decide to change them.
