o2 sensor heater circuit p0141 bank 1 sensor 2
That's the upstream oxygen sensor (ahead of the catalytic converter). Jim
Actually, this is the downstream O2 sensor on Bank 1. From the Mazda manual, p. 01-01-38: "Rear HO2S of Bank 1 heater circuit is open, shroted to ground, shorted to VPWR, or has low or high current draw."
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