p0327
Easy Fix
Buick · SUVs
Knock Sensor 1 Circuit Low (Bank 1)
Quick Answer
Error code P0327 on your Buick SUVs means: Knock Sensor 1 Circuit Low (Bank 1). This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Locate knock sensor location
2
Inspect connector for corrosion or looseness
3
Test sensor resistance with multimeter
4
Replace knock sensor if faulty
Pro Tip
This is a common issue that most users can resolve without specialized tools. Try the first step before moving on to more complex solutions.
Parts You May Need
Knock sensor
Sensor socket
Anti-seize compound
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