OBD-II Generic Error Code P0514: How to Fix It

Easy 30-60 minutes Medium Severity Verified June 2026
Error Code
P0514
Brand
OBD-II Generic
Product Type
automotive
Severity
Medium
DIY Difficulty
Easy
Estimated Fix Time
30-60 minutes
Error code P0514 indicates that your vehicle's battery temperature sensor circuit is out of the expected range. This sensor monitors battery temperature to optimize charging and prevent overcharging. A faulty sensor or wiring issue can trigger this code, potentially affecting battery life and starting performance.
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Tools You'll Need

How to Fix Error Code P0514

  1. Scan and Clear the Code

  2. Inspect the Battery Temperature Sensor

    Disconnect the negative battery terminal before inspecting to avoid electrical shock or short circuits.
  3. Test the Sensor Resistance

  4. Check Wiring and Connections

  5. Replace the Battery Temperature Sensor

    Ensure the new sensor is correctly positioned and secured to prevent false readings.
  6. Clear Codes and Test Drive

Parts You May Need

Battery temperature sensor
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Wiring harness connectors
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Battery temperature sensor
Check Price on Amazon
Wiring harness connectors
Check Price on Amazon
Battery temperature sensor
Check Price on Amazon
Wiring harness connectors
Check Price on Amazon
Battery temperature sensor
Check Price on Amazon
Wiring harness connectors
Check Price on Amazon
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When to Call a Professional

If the code persists after replacing the sensor and checking wiring, the issue may be with the ECM or deeper electrical system. A professional mechanic can perform advanced diagnostics and repairs.

Frequently Asked Questions

Can I drive my car with the P0514 code?
Yes, but it is not recommended for long trips. The code indicates a potential problem with battery temperature monitoring, which may affect charging and battery life. It's best to diagnose and fix the issue promptly.
What causes the P0514 code?
Common causes include a faulty battery temperature sensor, damaged wiring or connector, corrosion, or a short circuit in the sensor circuit.
How much does it cost to fix the P0514 code?
Replacing the sensor typically costs between $20-$60 for the part. Labor at a shop can add $50-$100. DIY is much cheaper, only the cost of the sensor and tools.
Will the P0514 code clear itself?
The code may clear after several drive cycles if the issue is intermittent, but it will return if the underlying problem persists. Clearing with a scanner is more reliable.
Is the battery temperature sensor important?
Yes, it helps the ECM regulate charging voltage based on temperature. A faulty sensor can cause overcharging or undercharging, damaging the battery or affecting vehicle performance.