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P0538

Overview

Code

P0538

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 P0538 indicates an intermittent fault in the A/C refrigerant temperature sensor circuit

Symptoms

Erratic A/C cooling

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 system

Possible Causes

Faulty refrigerant temperature sensor; Wiring issues

Diagnostic Steps

1 Inspect wiring and connections 2 Test sensor for intermittent faults

Drive Safety Notes

Inconsistent A/C performance

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