AutoCodes – Generic – B0515

B0515 Code - Output Air Temperature Sensor 4 Circuit Range/Performance

Quick Answer

Air temperature sensors allow the Heating, Ventilation, and Air Conditioning (HVAC) Control Module to monitor the discharge duct air, outside air and inside air temperatures. Common causes include Faulty Output Air Temperature Sensor 4, Output Air Temperature Sensor 4 harness is open or shorted, Output Air Temperature Sensor 4 circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B0515 indicates Output Air Temperature Sensor 4 Circuit Range/Performance.
Common causes: Common causes include Faulty Output Air Temperature Sensor 4, Output Air Temperature Sensor 4 harness is open or shorted, Output Air Temperature Sensor 4 circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 2,204

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 11, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0515 Description

Air temperature sensors allow the Heating, Ventilation, and Air Conditioning (HVAC) Control Module to monitor the discharge duct air, outside air and inside air temperatures. The HVAC control module provides ground to the air temperature sensor through the low reference circuit. The HVAC control module monitors the voltage drop across the air temperature sensor thermistor by supplying a 5 volt reference to the signal circuit of the air temperature sensor for automatic control calculations. When the air temperatures are cold, the resistances of the sensors are high and the voltage signals are high. When the air temperatures are hot, the resistances of the sensors are low and the voltage signals are low. The HVAC control module can read voltage values and count values where 1 volt is approximately equal to 51 counts.

OBDII Code B0515 - Output Air Temperature Sensor 4 Circuit Range/Performance - AutoCodes.com — B0515 Code - Output Air Temperature Sensor 4 Circuit Range/Performance

What does this mean?

What are the Possible Causes of the DTC B0515?

Faulty Output Air Temperature Sensor 4
Output Air Temperature Sensor 4 harness is open or shorted
Output Air Temperature Sensor 4 circuit poor electrical connection
Faulty Heating, Ventilation, and Air Conditioning (HVAC) Control Module

How to Fix the DTC B0515?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B0515 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B0515 code?

Need more information on how to fix the B0515 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0515 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B0515 Buick — Output Air Temperature Sensor 4 Circuit Range/Performance
B0515 Cadillac — Output Air Temperature Sensor 4 Circuit Range/Performance
B0515 Chevrolet — Output Air Temperature Sensor 4 Circuit Range/Performance
B0515 GMC — Output Air Temperature Sensor 4 Circuit Range/Performance

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B0515 Code

1. What are the common symptoms of OBDII code B0515 related to the Output Air Temperature Sensor 4 Circuit Range/Performance?

- Common symptoms include poor engine performance, decreased fuel efficiency, and potential issues with the vehicle's heating and cooling systems.

2. What are the possible causes of OBDII code B0515?

- The code B0515 can be triggered by a faulty air temperature sensor, damaged wiring or connectors, or issues with the sensor's circuit.

3. How can I diagnose the cause of OBDII code B0515?

- To diagnose the issue, you can use an OBDII scanner to read the code and check the air temperature sensor's readings. Inspect the wiring and connectors for any visible damage.

4. What should I do if I get OBDII code B0515?

- If you get code B0515, it's advisable to address the issue promptly to prevent further damage to your vehicle and restore optimal performance.

5. Can I repair OBDII code B0515 on my own?

- Depending on your skill level and access to tools, you may be able to repair code B0515 on your own by replacing the faulty air temperature sensor or repairing damaged wiring.

6. Is it safe to continue driving with OBDII code B0515 present?

- While the vehicle may still be operational with code B0515, it's recommended to address the issue as soon as possible to avoid potential long-term damage and safety risks.

7. How much does it typically cost to repair OBDII code B0515?

- The cost of repairing code B0515 can vary depending on the extent of the issue, the parts needed, and whether you choose to do the repair yourself or take it to a professional mechanic.

8. Can OBDII code B0515 be intermittent?

- Yes, code B0515 can sometimes be intermittent, meaning the issue may come and go. It's essential to address the problem even if it seems to resolve itself temporarily.

9. Are there any preventive measures to avoid OBDII code B0515 in the future?

- To prevent code B0515, it's recommended to perform regular maintenance on your vehicle, including checking the air temperature sensor and its connections for any signs of wear or damage.

10. How important is it to fix OBDII code B0515 promptly?

- It is crucial to address code B0515 promptly to ensure your vehicle operates efficiently, maintain optimal fuel economy, and prevent potential damage to other components in the long run.