p0327
Moderate
Cadillac · SUVs
Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor)
Quick Answer
Error code P0327 on your Cadillac SUVs means: Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor). This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Likely Causes
How to Fix It
1
Connect diagnostic scanner and verify code
2
Inspect knock sensor connector
3
Test knock sensor resistance
4
Replace knock sensor if necessary
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Knock sensor
Electrical connectors
Wire repair kit
Related Error Codes