P0452 Mazda -

Question

light on new ecm no 5 volt reference signal from pcm. continuity in wire from pcm to sensor

Answer 1

Hi there,

This code indicates an issue with the fuel tank pressure sensor. Here is some info for you.

P0452 MAZDA - Fuel Tank Pressure Sensor Malfunction Input Below Calibration

Read more: https://www.autocodes.com/p0452_mazda.html