Question

Replaced knock sensor after code p0327 ECL persists, even though if cleared while driving the ECL stays off untill I shut off the engine.

Answer 1

Hi there,

Since changing the sensor hasn't solved the issue, it's likely a wiring issue. Here is some more info for you.

P0327 MAZDA - Knock Sensor Circuit Low Input

Read more: https://www.autocodes.com/p0327_mazda.html