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Hi Everyone,

The check engine light turned on this morning, the fault code I'm getting out of the ODBII is P0037.

A generic Mazda search gave me this list of possibilities

- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 fuse
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 harness is open or shorted
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit poor electrical connection
- Faulty Engine Control Module (ECM)

Does any one any know if there is a different list for the ND's (06)? Or which Fuse to check?

Hola,

Disclaimer: I don't have an NC, ('06) but they do indeed have two Oxygen Sensors, that code indicates that sensor #2 has failed (or the wiring that goes to it, but most likely, the sensor itself)

Lots of informations here: http://forum.miata.net/vb/showpost.php? ... ostcount=8

OBD-II itself is a standard, which means the codes "should" mean the same thing across all cars, or at the very least, all mazdas after about 2001ish, and definitely after 2006 on Australian delivered cars.

HTH