Loose alternator belt possibly causing o2 sensor, neutral safety switch malfunctions? - Drive Accord Honda Forums
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post #1 of 2 Old 04-18-2019, 12:01 PM Thread Starter
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Loose alternator belt possibly causing o2 sensor, neutral safety switch malfunctions?

1996 Honda Accord LX 2.2L I4...

Drove around with a loose alternator belt for a bit and eventually check engine came on. Codes came back p0706, p0705 related to neutral safety switch, and p0420, p0430 related to o2 sensors. Could the lack of electric current be causing these to malfunction?

A few days later the check engine light turned off. A few days after that I tightened up the alternator and the belt for good. Had it scanned and no codes coming back.

I was having a hard time finding information on this for my model and year. Thinking about just replacing the sensors anyway as theyre pretty cheap online and not too difficult to replace. Any ideas? Where is the neutral safety switch located on a 5th gen accord? - 6th gen is behind one of the front wheels but I think it's different for 5th gens.

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post #2 of 2 Old 04-18-2019, 04:05 PM
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Quote:
Originally Posted by Mike Rongo View Post
Drove around with a loose alternator belt for a bit and eventually check engine came on. Codes came back p0706, p0705 related to neutral safety switch, and p0420, p0430 related to o2 sensors. Could the lack of electric current be causing these to malfunction?
Absolutely. Low voltage and bad grounds cause all kinds of odd problems. Now you want to check the battery voltage and maybe charge it with a 120v plug-in charger. A low battery will also cause problems, even if the alternator is working fine.

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I was having a hard time finding information on this for my model and year. Thinking about just replacing the sensors anyway as theyre pretty cheap online and not too difficult to replace. Any ideas?
I'd say if they're working, leave good enough alone.

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2007 Accord SE sedan; I-4 automatic

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