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P0420 Fault Code Explanation and O2 Sensor Voltage Testing for 2000 Honda Odyssey

Model: Honda Odyssey Fault Code: P0420 Posted: 2006-12-27 15:57

I own a 2000 Honda Odyssey and am seeking accurate voltage range information for both the front and rear oxygen (O2) sensors. Specifically, I need to know the expected test voltages to determine if the sensors are functioning properly or have failed. This will help me diagnose the P0420 fault code related to catalytic converter efficiency. Any detailed technical guidance would be greatly appreciated. Thanks, Doug

Related fault codes
P0420
Comments (1)
Anonymous 2006-12-29 17:11

Have you checked or replaced the O2 sensors? Is the heater circuit active (on or off) during testing? This can impact sensor readings and diagnosis accuracy.