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P0325

Overview

Code

P0325

Code Type

P

Code Class

P0

System

Engine

Severity Level

High

Emissions Related

true

Drivability Impact

Major

Diagnostic Protocol

OBD2

Freeze Frame Useful

true

Code Definition

Diagnostic trouble code P0325 indicates a malfunction in the knock sensor 1 circuit (Bank 1)

Symptoms

Engine knocking; Reduced performance

Overview applies to this diagnostic code.

Affected Systems

On This Page

  • Code Definition

  • Symptoms

  • Affected Systems

  • Possible Causes

  • Diagnostic Steps

  • Drive Safety Notes​

More Resources

Ignition timing adjustment and engine protection for Bank 1

Possible Causes

Faulty knock sensor; Wiring short/open; Sensor misalignment

Diagnostic Steps

1 Inspect knock sensor mounting and wiring; 2 Test sensor resistance; 3 Monitor sensor signal during engine operation; 4 Replace sensor if needed

Drive Safety Notes

Engine knocking may lead to piston/rod damage

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