Wiring diagram O2 sensor Bank 1 to PCM

TAGZ

MEMBER
2008 MAZDA TRIBUTE
2.3L
4 CYL
2WD
AUTOMATIC
45,000 MILES

Hi Ken,

Need your help on wiring diagram from O2 sensor bank 1 to PCM.

Thanks

Tuesday, August 13th, 2019 AT 11:05 PM

5 Replies

DANNY L

MECHANIC
5,648 POSTS

Hello, I'm Danny.

Here is the wiring diagram attached below per your request. Here is a tutorial for checking wiring and oxygen sensor replacement:

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor

Hope this helps and thanks for using 2CarPros.

Danny-

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Tuesday, August 13th, 2019 AT 11:15 PM

TAGZ

MEMBER
3 POSTS

Hi Danny,

Thanks for the fast response. Here's what I have done to test the O2 sensor. Initially with P0134 code no activity bank 1 sensor 1.

1. Tested the sensor Okay with 3 ohms
2. Power is good on O2 connector.12v
3. No ground obly 4mv

Replaced the sensor and cleared with scanner still same code P0134.

My O2 sensor have 5 wires. Power is present on the Blue wire. Which one is the ground to PCM?

Wire color blue, yellow, white, grey and black.

Thanks

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Tuesday, August 13th, 2019 AT 11:34 PM

DANNY L

MECHANIC
5,648 POSTS

Hello again.

I've attached a wiring diagram below. Hope this helps and thanks again for using 2CarPros. Let me know if you need anything else.

Danny-

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