What should I do next?

Question

I replace my camry Bank 1 sensor 1 O2 sensor with new one from Denso, then resetted the engine light by removing the battery +V for more than 10 min.

After, few hours the engine light comes back again with error code (P0031). I measured the new A/F sensor resistance and it reads 2.4 ohm.

Dos I need to buy another one with lower resistance? What is other options to check please?

My car is : 2.4L Camry 2003

Answer 1

P0031 Oxygen sensor heater control circuit low (bank 1 Sensor 1)

If you have a scan tool on the generic side, there should be a reading for fuel system, one for each bank, or sensor . if the engine warmed up and the Fuel System read open , the ECM does not see the A/F sensor, this would be the ECM.