O2 sensor circuit help

CherBear

NAXJA Forum User

Location

Indiana

• Apr 5, 2009

• #1

I have a check engine code that says something to the effect of "Voltage above normal operating levels".
I disconnected both sensors, reset engine computer, it still gives me the same code.
So i feel i have a short somewhere in my o2 circuit.
I have visually checked the wires that i can see from underneath my XJ for visible damage. Does anyone know where these wires come out under the hood?

 

Tim_MN

Freakish Hand Strength

NAXJA Member

Location

Minneapolis, MN

• Apr 5, 2009

• #2

You are sure the O2 sensor is functioning correctly ? Have you tested it ?

 

B

birchlakeXJ

NAXJA Forum User

Location

Melrose, MN

• Apr 6, 2009

• #3

Post year and engine and exact code number(s) for the most accurate responses.

Your problem could be the sensor itself. As Tim mentioned, they could be tested if you're so inclined.

 

C

CMAHON

NAXJA Forum User

Location

Arlington, TX

• Apr 6, 2009

• #4

I'M HAVING A SIMILAR PROBLEM. HAVE YOU CHECKED THE FUSE UNDER THE HOOD? MINE KEEPS BLOWING, SO I THINK IT IS A SHORT.

 

W

winterbeater

NAXJA Forum User

Location

Royal Oak, Michigan

• Apr 7, 2009

• #5

Wires to o2 sensors melt on exhaust sometimes. Makes fuse blow.

 

CherBear

NAXJA Forum User

Location

Indiana

• Apr 7, 2009

• #6

hmm anybody know which fuse it is?

 

W

winterbeater

NAXJA Forum User

Location

Royal Oak, Michigan

• Apr 7, 2009

• #7

depends on your year

 

CherBear

NAXJA Forum User

Location

Indiana

• Apr 8, 2009

• #8

Mines a 2000.

 

N

nick86

NAXJA Forum User

Location

iowa

• Apr 8, 2009

• #9

PM sent, you are welcome. If I had the DTC # it would be more helpfull.

 

Last edited: Apr 8, 2009