P0325

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Knock Sensor Circuit Malfunction

What this code means

The knock sensor signal is invalid - the ECU can no longer detect detonation and retards timing defensively.

Common symptoms

Reduced power
Worse fuel economy
Possible pinging under load

Most common causes

Failed knock sensor
Corroded connector
Wiring damage
Loose sensor mounting

Can you keep driving?

Driveable, but with defensive timing the engine is slower and thirstier - and real knock goes undetected.

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Descriptions are for guidance only. Accurate diagnosis requires a workshop inspection.