P0517 Fault Code

Battery Temperature Sensor Circuit High

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0517 fault code indicates that there is an issue with the battery temperature sensor circuit, specifically that the sensor circuit has a high voltage reading. This can lead to incorrect readings of the battery temperature, potentially resulting in improper battery management and performance. Understanding the battery temperature is crucial for optimal vehicle operation and longevity of the battery.

What are the symptoms of the P0517 code?

Typical symptoms associated with a P0517 fault code may include:

• Warning lights on the dashboard, such as the check engine light.
• A decrease in battery performance or unexpected battery failure.
• The vehicle may enter a protective mode, limiting power or affecting charging efficiency.
• Error messages regarding battery temperature in the vehicle's onboard diagnostic system.

What causes the P0517 code?

Common causes of the P0517 fault code include:

• A malfunctioning battery temperature sensor.
• Damaged wiring or connectors in the battery temperature sensor circuit.
• Short circuits or opens in the battery sensor circuit.
• Issues with the vehicle's Engine Control Module (ECM) interpreting a high voltage signal from the sensor.

How to fix P0517?

To resolve the P0517 fault code, consider following these steps:

• Inspect the battery temperature sensor and its connections for any visible damage or corrosion.
• Check the wiring harness for continuity, looking specifically for shorts or breaks in the circuit.
• If the sensor is faulty, replace it with a new one.
• Clear the fault code using a scan tool and check if it returns after driving the vehicle for a while.
• If needed, consult with a professional technician for further diagnosis and repair of the ECM or circuit issues.