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P0597

Overview

Code

P0597

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 P0597 indicates a malfunction in the cooling system thermostat bypass control

Symptoms

Overheating; Poor fuel economy

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

Thermostat bypass control

Possible Causes

Faulty thermostat bypass control circuit

Diagnostic Steps

1 Inspect thermostat bypass circuit 2 Test bypass control operation

Drive Safety Notes

Risk of engine overheating

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