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Old 04-10-2013, 10:26 AM   #1
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Join Date: Apr 2013
Location: phoenix, Arizona
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Error Codes P0332 and P0171 & 0174

Good Day All:

I have a GMC Yukon XL 2002 5.3 V8
The check engine light is on and the codes are P0332 Knock Sensor Circuit Low Frequency Bank 2
The other codes are P0171 and P0174 both are referring to fuel trim system lean bank 1 and 2.
First question: Could these error codes be related?
Second P0332 knock sensor: to remove the air intake manifold the gasket should/will also need to be replaced correct.
Third Question Fuel Trim System Lean: What does that mean and where does that direct me for repairs.

Thank you

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