1998 Accord 2.3L, MIL on, Code found
#2
Got any exhaust leaks? If so fix em.
The rear oxygen sensor measures whether your cat is working. But the O2 sensors actually measure oxygen DIFFERENCE inside vs. outside of the sensor. So an exhaust leak blowing onto the outside of the sensor will throw off the measurement. Same for oil or crud dripping onto the sensor.
No promises, cause it just might be a bad catalyst. But you'll want to rule out the easy stuff first.
The rear oxygen sensor measures whether your cat is working. But the O2 sensors actually measure oxygen DIFFERENCE inside vs. outside of the sensor. So an exhaust leak blowing onto the outside of the sensor will throw off the measurement. Same for oil or crud dripping onto the sensor.
No promises, cause it just might be a bad catalyst. But you'll want to rule out the easy stuff first.
#3
Got any exhaust leaks? If so fix em.
The rear oxygen sensor measures whether your cat is working. But the O2 sensors actually measure oxygen DIFFERENCE inside vs. outside of the sensor. So an exhaust leak blowing onto the outside of the sensor will throw off the measurement. Same for oil or crud dripping onto the sensor.
No promises, cause it just might be a bad catalyst. But you'll want to rule out the easy stuff first.
The rear oxygen sensor measures whether your cat is working. But the O2 sensors actually measure oxygen DIFFERENCE inside vs. outside of the sensor. So an exhaust leak blowing onto the outside of the sensor will throw off the measurement. Same for oil or crud dripping onto the sensor.
No promises, cause it just might be a bad catalyst. But you'll want to rule out the easy stuff first.
#5
I have the same car as the OP, with the same code that keeps coming back after erasing it. Car has 219 k original miles, original engine, cat converer & O2 sensors. I still have to check for any leak, as recommended here. Tkrotchko, did you replace the O2 sensors as well?
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Brian R
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12-30-2008 10:38 AM