Check Engine Light/Trouble Code Due to Stuck Open Thermostat on Mazda 5

Submitted by Vehicle Owner · May 22, 2021

Published by RepairPal

Problem overview

Some vehicles may experience Check Engine Light illumination with a trouble code indicating the thermostat is stuck open. The thermostat will need to be replaced with a modified one and there is a software update for the Powertrain Control Module (PCM).

50 people reported this problem

24 comments

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Mazda 5 vehicles with this problem

6 model years affected

Average mileage: 82,339 miles

(26,383 - 205,000)

Repairs related to this problem

Thermostat Replacement

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Check Engine Light/Trouble Code Due to Stuck Open Thermostat on Mazda 5

Problem overview

Mazda 5 vehicles with this problem

Need a diagnosis? Trust our Mazda experts.

Search for another problem

Ask our experts about your Mazda.

Need a diagnosis? Trust our Mazda experts.

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