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P0332 Question

P0332 Question

Postby cat4lyst [OP] » Mar 27 2012, 8:14am

Hello,
So I have owned this truck for 3 months now (2002 Silverado Z71, 100k miles). About a month or so into owning it I started getting P0332 codes. I would just clear it hoping it would go away :? , but it would come back in a day or so. The truck, imo, runs good with no apparent deficiencies besides the engine light. I had been putting 89 octane gas since i bought it, recently with the gas prices it seemed reasonable to use 87. Well for whatever reason the Service light has not turned on since. I an not 100% sure yet but could this be a possible reason... ?? What could this indicate? If anyone has some knowledge of this type of behavior with these trucks, any ideas/experiences would be interesting to hear. thanks!
Original Poster
cat4lyst
Firing on 1 cylinder [L1]
Firing on 1 cylinder [L1]
Posts: 16
Topics: 4
Joined: Dec 19 2011, 8:53pm
Years of membership: 3 years of membership3 years of membership3 years of membership
Location: Concord, California
Year: 2002
Make/Model: Chevrolet Silverado
Extra Info: 1500 LS Z71
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Re: P0332 Question

Postby adkman » Mar 27 2012, 9:15am

P0332 code is your knock sensor and this code only shows up when there is a low output voltage from the sensor. It may be a couple of things perhaps the sensor is faulty, bad wire connection or a problem with the pcm but has nothing to do with the octane of your feul. I would definitly have it looked at.
Experience is the name everyone gives to their mistakes. ~ Oscar Wilde
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adkman
Firing on 4 cylinders [L1]
Firing on 4 cylinders [L1]
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Images: 3
Joined: Feb 17 2012, 9:17am
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Location: adirondacks, NY
Year: 2005
Make/Model: Chevrolet Silverado
Extra Info: 2500HD LS 6.0 4x4
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Re: P0332 Question

Postby cat4lyst [OP] » Mar 27 2012, 6:44pm

Thanks for the response. I guess the P0332 code doesn't actually indicate anything relating to the quality of combustion, just that the sensor is not is not behaving has expected. A misunderstanding on my part. Any idea's where I can find information about the sensor itself, IE spec's on normal resistance across the sensor? Thank you much for your advice, i really do appreciate the help.
Original Poster
cat4lyst
Firing on 1 cylinder [L1]
Firing on 1 cylinder [L1]
Posts: 16
Topics: 4
Joined: Dec 19 2011, 8:53pm
Years of membership: 3 years of membership3 years of membership3 years of membership
Location: Concord, California
Year: 2002
Make/Model: Chevrolet Silverado
Extra Info: 1500 LS Z71
Group Membership:
Registered users

Re: P0332 Question

Postby adkman » Mar 27 2012, 10:19pm

You have two knock sensors. Code p0332 is for the rear sensor or bank 2 (p0327 is front or bank 1) they are located under the intake. I believe the normal resistance is 100 ohms. Not exactly sure where the connectors are on your truck you could ask one of the mechanics on here or invest in a haynes manual its well worth the 20 bucks, mine has saved me hundreds of dollars. sorry I couldn't be of more help and good luck
Experience is the name everyone gives to their mistakes. ~ Oscar Wilde
User avatar
adkman
Firing on 4 cylinders [L1]
Firing on 4 cylinders [L1]
Posts: 40
Topics: 8
Images: 3
Joined: Feb 17 2012, 9:17am
Years of membership: 3 years of membership3 years of membership3 years of membership
Location: adirondacks, NY
Year: 2005
Make/Model: Chevrolet Silverado
Extra Info: 2500HD LS 6.0 4x4
Group Membership:
Registered users

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