SPONSORED LINKS

Oxygen Sensor errors

Tiny
RMAHERI
  • MEMBER
  • BMW 528
I have a 1999 528i, and in the past week the car started to shake at idle and it seemed like to be misfiring at times. I got the following codes from the computer: Precat oxygen sensor short to ground, precaat oxygen sensor slow response time, misfire detectd at cyl #1-6. I went ahead and replaced the two precat oxygen sensors and reseted the computer. When I started the car it seemed to be still shaking at idel, and after 15 minutes of driving the check engine came back on. Read the codes, the same codes came back on. What could it be?
SPONSORED LINKS
Sunday, October 14th, 2007 AT 1:52 AM

2 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Short to ground means just that, check the wiring to the sensor!
Was this
answer
helpful?
Yes
No
Sunday, October 14th, 2007 AT 7:03 AM
Tiny
RMAHERI
  • MEMBER
  • 2 POSTS
Thanks for the quick response. Does this mean one of the leads is touching ground. Could it be that one of the post catalytic convertor oxygen sensors is bad?
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Sunday, October 14th, 2007 AT 10:03 PM

Please login or register to post a reply.

Related Oxygen Sensor Replace/Remove Content

Oxygen Sensor Replacement
VIDEO
Oxygen Sensor Replacement
Instructional repair video
Oxygen Sensor Replacement
GUIDE
Oxygen Sensor Replacement
An oxygen or lambda sensor is used to determine the engine exhaust mixture which can then be controlled by the computer. These sensors are equipped with a heater that can...
VIEW MORE

Sponsored links