Code P0030

NASER NASER

MEMBER
2008 MAZDA CX-7
4 CYL
TURBO
2WD
AUTOMATIC
169,000 MILES

Looking in the vac of the motor, this is the A/F sensor on top isn't it? I see the oxygen sensor right below it, but if am not mistaken this is the top one coming out of the manifold isn't it?

Friday, January 29th, 2021 AT 10:45 AM

3 Replies

SEVAG P

MECHANIC
405 POSTS

Hello,

sounds like front oxygen sensor front one must be replaced, check visually if the connectors are tight and clean.

check our link below how to checko2 sensor and how to replace.

https://www.2carpros.com/articles/how-to-test-an-oxygen-sensor-02-sensor

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

Check the pictures and diagram below location of the front oxygen sensor which is number 2 in the diagram 2(picture 2).

check the attached table for steps for oxygen sensor test and troubleshooting.

let us know what happens with you.

thank you.

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