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P0539

Overview

Code

P0539

Code Type

P

Code Class

P0

System

A/C

Severity Level

Medium

Emissions Related

false

Drivability Impact

Minor

Diagnostic Protocol

OBD2

Freeze Frame Useful

true

Code Definition

Diagnostic trouble code P0539 indicates a malfunction in the A/C refrigerant pressure sensor circuit

Symptoms

Poor cooling 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

A/C refrigerant pressure monitoring

Possible Causes

Faulty refrigerant pressure sensor

Diagnostic Steps

1 Inspect refrigerant pressure sensor 2 Test sensor output

Drive Safety Notes

A/C may not cool effectively

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