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2004 HondaAcc EX CEL - Oxygen Sensor

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Old 02-02-2009, 08:14 AM
JimBlake's Avatar
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That should have been P0141, right? It's ALWAYS best to get the actual code number.

I think the plug for that rear O2 sensor is inside the car, somewhere under the carpeting under the front passenger seat. Unplug it & test with a multi-meter. Measure resistance between the 2 same-color (black?) wires. Should be 10 ohms or so, a failed sensor would read open-circuit.

If you're lucky, its a loose connection, dirty/corroded plug, or something like that which you can clean up. Otherwise, you replace the sensor from underneath the car. A normal repair shop should be able to handle this, if you don't want to do it yourself or take it to the dealer.

If your local shop finds something like a cut wire that you can actually blame on the dealer, then maybe you can call them & see what they will do about it. Otherwise, I'd say its a coincidence.
 
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