B0519

Rear Upper Duct Air Temperature Sensor Circuit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Incorrect operation of the air conditioning system
Incorrect readings of air temperature in the cabin
Illumination of the malfunction warning lamp on the instrument panel

Causes

Malfunction of the rear upper air duct temperature sensor
Open or shorted wiring harness
Poor contact in the sensor connector
Malfunction of the air conditioning control unit

How to Fix

Check the condition of the sensor and its connector
Check the integrity of the wiring harness
Replace temperature sensor if necessary
Check the operation of the air conditioning control unit

Related codes

B0518 B0520 B0521