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P0728

Overview

Code

P0728

Code Type

P

Code Class

P0

System

Transmission

Severity Level

High

Emissions Related

true

Drivability Impact

Major

Diagnostic Protocol

OBD2

Freeze Frame Useful

true

Code Definition

Diagnostic trouble code P0728 indicates a malfunction in the engine coolant temperature sensor circuit

Symptoms

Overheating Poor engine performance

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

Engine coolant temperature sensor

Possible Causes

Faulty coolant temperature sensor Wiring issues

Diagnostic Steps

1 Inspect coolant temperature sensor2 Test sensor output

Drive Safety Notes

Malfunctioning coolant sensors can cause engine overheating

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