Oxygen sensor question
Thread Starter
Drifting
Joined: Mar 2012
Posts: 1,959
Likes: 217
From: Victoria tx
Oxygen sensor question
So my cel comes on and says my rear sensors, ok no big deal. Well my battery died due to my fault and since putting in a new battery the light is gone even after 75 miles of driving. Can low voltage trip the sensor or something?
Thread Starter
Drifting
Joined: Mar 2012
Posts: 1,959
Likes: 217
From: Victoria tx
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,615
Likes: 4,062
From: Cape Coral, Florida
The read O2 sensors will not cause the car to run rich…what were the DTC’s you were seeing ??…the CEL (MIL) will clear after disconnecting the battery and the battery will not die because of that fault.
Melting Slicks
Joined: Apr 2021
Posts: 2,191
Likes: 82
Low voltage depends i had went down to 10 volts when i was getting dynotuned and lucky the shop had a lithium jumpstarter to get the car started and didnt have any problems after just front o2 codes from the original 92k mile sensors.
I did have a low battery that i had jumpstarted or when i disconnected a bunch of stuff the car went haywire drove normal but inverted gauges but drove fine under reduced power untill a few drives or key cycles then ran normal. This was after i did a ecu reset for my transmission was in limp mode wouldnt shift i had to reset or erase the old memory by touching the positive negative together for a few seconds WITHOUT A BATTERY to get rid of any limp mode so the ecu could relearn and fresh start.
