Exhaust CMP Sensor

WARNING: This page is about a different car, the 2016 Mazda CX-3. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the negative battery cable. (Refer to NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .)
Disconnect the exhaust CMP sensor connector.
Remove the bolt.

Fig 1: Disconnecting Exhaust CMP Sensor Connector Bolt
Courtesy of MAZDA MOTORS CORP.
Remove the exhaust CMP sensor.
Install in the reverse order of removal.