Toyota Noah Oxygen Sensor Error

I'm having a perplexing issue with my 2015 Toyota Noah hybrid. The check engine light came on, and a scan showed an oxygen sensor error. I've also noticed increased fuel consumption. It has 122607 km, so I suspect the oxygen sensor is near its end, or maybe there's a bad cable or plug. Anyone seen similar symptoms, especially with the catalytic converter or exhaust?

4 comment(s)

Hey! I drive a Noah too, though I can't remember the exact year. Your issue sounds super familiar. The check engine light and fuel consumption spike definitely ring a bell. I was also suspecting the O2 sensor, especially with that kind of mileage on the clock. Did the diagnostic tool give you a specific code?

The tool gave a generic code about the oxygen sensor's performance being out of range. I didn't write down the number. Could you tell me more about your experience? Did you also find a defective cable or plug?

Yeah, I remember spending ages looking up the error code, and it pointed straight to the O2 sensor needing a swap. I had a quick look at the wiring, but honestly, electrics aren't my strong point, so I booked it into the workshop. They replaced the sensor, and the MPG went back to normal immediately. Best bet is probably getting it checked out professionally to be sure.

Thanks for sharing your experience. I'll book an appointment with a workshop to check the oxygen sensor, including the cable and plug. The repair cost was 95€.

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