P0135 - 2002 Accord SE
#2
4-cyl engine??
Yes, it's the one in front. Unplug it & find the 2 same-color wires on the sensor side of the plug. Measure resistance between those. For a non-ULEV engine that should be 10 to 40 ohms. A bad sensor will usually be open-circuit.
For a ULEV engine, the correct resistance might be different but I don't know what it should be.
If that measurement is OK, then you'll have to troubleshoot wiring problems in the car.
Yes, it's the one in front. Unplug it & find the 2 same-color wires on the sensor side of the plug. Measure resistance between those. For a non-ULEV engine that should be 10 to 40 ohms. A bad sensor will usually be open-circuit.
For a ULEV engine, the correct resistance might be different but I don't know what it should be.
If that measurement is OK, then you'll have to troubleshoot wiring problems in the car.
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