B0519
Rear Upper Duct Air Temperature Sensor Circuit
B0519 is an OBD-II diagnostic trouble code meaning: Rear Upper Duct Air Temperature Sensor Circuit. Common causes: malfunction of the rear upper air duct temperature sensor, open or shorted wiring harness. Estimated repair cost: $56–167.
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
Error B0519 by Vehicle Brand
FAQ
What does the B0519 code mean?
B0519 is an OBD-II diagnostic trouble code that indicates: Rear Upper Duct Air Temperature Sensor Circuit
What causes a B0519 error code?
The most common causes of B0519 include: 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 do I fix a B0519 diagnostic trouble code?
To fix B0519: Check the condition of the sensor and its connector. Check the integrity of the wiring harness. Replace temperature sensor if necessary. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B0519?
Limited driving only, diagnose soon
How much does it cost to fix B0519?
The estimated repair cost for B0519 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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