2003 Outback Limited 2.5L H4 5MT Regatta Red Pearl w/ lift and audio system
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Hello guys,
How are you today?
My car is a 2003 Outback 2.5L N/A. I'm troubleshooting a P0036 code, Rear O2 sensor low voltage on heater control circuit.
I have a brand new O2 sensor and new wiring from the O2 clip to the engine harness. This P0036 code was present before I replaced the sensor; it was present even when I had no O2 sensor installed. When I replaced the O2 sensor and reconnected the battery, the code returned within seconds. I cleared the code multiple times and every time it returned shortly after.
I have checked continuity of the O2 sensor and sensor wiring to the engine harness, and I have checked voltage of the heater circuit at the engine clip. I am very dumb with electronics, but it seems that everything checks out. With the car on, the circuit reads ~13 volts at the engine clip.
With my FreeSSM software, I ran a test of the rear O2 heater circuit voltage with the car running and the test said the circuit was at a totally constant 0.2 Volts.
I'm pretty much at a loss now. This is the only electrical issue that I have with this car, as far as I can tell. Am I looking at a problem with my ECU? I don't know enough about how this stuff works.
Thanks guys.
How are you today?
My car is a 2003 Outback 2.5L N/A. I'm troubleshooting a P0036 code, Rear O2 sensor low voltage on heater control circuit.
I have a brand new O2 sensor and new wiring from the O2 clip to the engine harness. This P0036 code was present before I replaced the sensor; it was present even when I had no O2 sensor installed. When I replaced the O2 sensor and reconnected the battery, the code returned within seconds. I cleared the code multiple times and every time it returned shortly after.
I have checked continuity of the O2 sensor and sensor wiring to the engine harness, and I have checked voltage of the heater circuit at the engine clip. I am very dumb with electronics, but it seems that everything checks out. With the car on, the circuit reads ~13 volts at the engine clip.
With my FreeSSM software, I ran a test of the rear O2 heater circuit voltage with the car running and the test said the circuit was at a totally constant 0.2 Volts.
I'm pretty much at a loss now. This is the only electrical issue that I have with this car, as far as I can tell. Am I looking at a problem with my ECU? I don't know enough about how this stuff works.
Thanks guys.