P0538 — A/C Evaporator Temperature Sensor Circuit High

What Does P0538 Mean?

P0538 is a diagnostic trouble code indicating: A/C Evaporator Temperature Sensor Circuit High. This code relates to the vehicle speed and idle control system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

What To Do Next

1
Find your vehicle above
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2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

Related Codes

P0533 A/C Refrigerant Pressure Sensor High P0534 A/C Refrigerant Charge Loss P0535 A/C Evaporator Temperature Sensor Circuit P0536 A/C Evaporator Temperature Sensor Circuit Range/Performance P0537 A/C Evaporator Temperature Sensor Circuit Low P0539 A/C Evaporator Temperature Sensor Circuit Intermittent P0540 Intake Air Heater A Circuit P0541 Intake Air Heater A Circuit Low