2018 G310R Exhaust Gas Sensor Question

[44006]

Motorcycle was stolen in May 2023 and returned to me in Feb 2024 with aftermarket exhaust system installed and many other undesirable alterations and crash damage (broken wheel,footpeg,tail lite assembly etc. about 2k worth of dealer price parts to restore)

Image attached shows gas sensor and wires recovered with cycle.
Sensor and its wires and part of aftermarket exhaust were torn off the cycle in a crash involving the thief.

1) Is this sensor the original part for this bike?
2) If so which color wire from sensor should connect to which numbered hole in the bike's plug and how?
3) Engine starts and runs. Will the engine be damaged by running with the sensor disconnected or just some performance issues?
4) I have recovered the core of the original exhaust system and installed it. All shielding and trim has been stripped off by thief.

Much damage was done by crash and thief alterations to bike. I need to run this thing long enough to determine if the bike is bent and will it steer properly and not wobble before spending time and money on other repairs.

Please no safety lectures - I am an adult capable of choosing what risks I am willing to take in the conduct of my private life.

 

[JerryG]

I happen to have my sensor and exhaust removed at the moment (re-installing a Scorpion exhaust). I'll take a look tomorrow and relate what I can see.

 

[JerryG]

What an interesting challenge you're undertaking. I hope it works out. S/ JerryG

Unfortunately, your O2 sensor wiring has four wires whereas mine has five wires.

However, I found a picture of the connector for a G310GS 4-wire O2 sensor online; it's the second picture below.

1) Is this sensor the original part for this bike?
A: Yes. It's the same as my first pic below. You can check this further by cleaning the barrel of your sensor and looking for the following:
On sensor, on the barrel above the nut, I have the following: "8393888-03", "NTK JAPAN", and "ZU3"
On sensor, on barrel below the crimp at wire end of the sensor, I have the following: "12EC"
On the other hand, yours might have different writing if the O2 sensor is older than mine; which is likely since I have fire wires to your four.

2) If so which color wire from sensor should connect to which numbered hole in the bike's plug and how?
A1: Order of colors: See the second picture I've attached. To me, it looks like Black, Grey, White, and White, but make sure you have the correct side of the connector facing you so you don't reverse the order.
A2: How: Push each of the four pins you show in one of your pictures into your O2 sensor side connector. The green triple flange on each wire forms a water tight seal and centers the pin in the hole. When inserted correctly, you should be able to look into the end of the connector and see the four pins. When you connect the O2 sensor side connector to the bike side connector, the pins should fully connect to the wiring harness.

3) Engine starts and runs. Will the engine be damaged by running with the sensor disconnected or just some performance issues?
A: I'm not a mechanic, but my understanding is that (1) it won't damage the engine; and (2) the engine won't run as well because the Engine Control Module won't have the readings from the disconnected O2 sensor to help it adjust the fuel-air mixture going into the engine. You should double check this with a mechanic. If no one on this forum chimes in to confirm or deny this, we should move this discussion to the Tech Session at the g310rforum.com (link below). There are people there who are mechanics or at least much more so than I am.

Engines and Technical Discussion

2016 BMW G310R discussions related to the Engine and Powertrain

www.g310rforum.com

4) I have recovered the core of the original exhaust system and installed it. All shielding and trim has been stripped off by thief.
A: There doesn't seem to be a question here. Semi-related: I removed my OEM exhaust two year's ago when my bike had just 4 miles on it. I have watched so many of these languish while listed for sale that I've concluded there is no market for selling them. So, I have mine listed for Free $0 (you pay shipping) at the link below.

FREE - You Pay Shipping: OEM Exhaust: JerryG's...

If you have a messed up exhaust, I'd rather this be on your bike than sitting in my attic. I have over 1000 posts on this forum. This is my second offering to sell something. The exhaust was removed on 1/13/22 after I trailered my 2022 G310GS home from my dealer. At that time, the bike had...

www.g310rforum.com

 

[pauls1150]

Just an FYI re question 3 ... When exhaust sensor #2 (of 3) failed in my car, besides the red dash light coming on, it had a poor idle and the gas mileage got worse, but it otherwise ran fine.

 

[44006]

Problem solved - thanks - picture of plug with wires attached just what I needed.