2009 Honda CRV knock sensor

SLEDBOY2K

MEMBER
2009 HONDA CRV
2.4L
4 CYL
AWD
AUTOMATIC
50,000 MILES

I threw a P0325 code for knock sensor circuit malfunction. I cleared the code and drove it 2 miles and it came back on again. I was wondering if you can test the knock sensor using an ohm meter to see if its still good? If so, what should the resistance be? Thank you

4 Replies

HMAC300

MECHANIC
48,601 POSTS

Honda doesn't give a resistance for that in our manual but on a gm it's like 8-9000 ohms. But ground out knocke sensor and check for ground at terminal 42 see pic. Also after replacement an dclearing code hold at 3000-4000 rpm then return to idleif light comes on with same code then it may need a software update for pcm or pcm may be bad.

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Saturday, December 21st, 2013 AT 10:31 AM

SLEDBOY2K

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39 POSTS

I can't get an ohm reading at all. I'm assuming that means it isn't any good?

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Saturday, December 21st, 2013 AT 12:21 PM

SLEDBOY2K

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39 POSTS

I went and rechecked my ohms and I'm reading 7 megaohms which is way larger than most of the specs I've seen from other manufacturers.

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Saturday, December 21st, 2013 AT 12:35 PM

HMAC300

MECHANIC
48,601 POSTS

Like I said Honda doesn't give us any specs n it and the only ones I can find are from fords which is 4.39M-5.35M ohms. So that may be right what you are reding. Have you grounded out knock sensor wire and checked for a reading at pin 42 like in pic that should say if there is a short in wire. It still cold be a bad pcm but that is kind of hard to fathom. Are there any other codes? Because it may be something else causing the ks to go off.

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Saturday, December 21st, 2013 AT 3:38 PM