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p0325
Moderate
Acura · Sedans
Knock Sensor 1 Circuit Malfunction
Quick Answer
Error code P0325 on your Acura Sedans means: Knock Sensor 1 Circuit Malfunction. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
DE3/DE4DC5/DN2DN2NC1KC1UA6CU2
Likely Causes
  1. Defective knock sensor
  2. Loose knock sensor connection
  3. Damaged wiring harness
  4. ECU malfunction
  5. Engine knock due to fuel quality
How to Fix It
1
Inspect knock sensor connector for corrosion
2
Test knock sensor resistance with multimeter
3
Check wiring continuity from sensor to ECU
4
Listen for engine knock during acceleration
5
Replace knock sensor if resistance is out of range
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
Dielectric grease
Related Error Codes
P0171P0300P0301P0420P0341
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