This text explains the error code P0517, which is a generic OBD-II code indicating a problem related to the Battery Temperature Sensor (BTS).
Summary of Code P0517
🔹 Problem: The PCM (Powertrain Control Module) detects too high a voltage on the BTS sensor (generally > 4.8V).
🔹 Severity: Low – This is mainly an electrical issue, and the PCM can compensate.
🔹 Possible symptoms:
- Check engine light on
- Low charging voltage
- Charge indicator light activated
Possible Causes
- Short circuit to power in the BTS sensor circuit
- Faulty BTS sensor
- Faulty PCM (rare)
Troubleshooting Steps
- Check Technical Service Bulletins (TSB) to see if there is a known solution for this issue on your vehicle model.
- Inspect the wiring and connector of the BTS sensor (near the battery or integrated into the PCM). Look for exposed, burnt wires, or corrosion on the connectors. Clean and apply electrical grease if necessary.
- Clear the error codes with a diagnostic tool and see if the code returns.
- Test the electrical circuit of the BTS sensor using a voltmeter:
- Disconnect the BTS sensor
- Check the voltage between the signal terminal and ground (should be around 5V)
- If the voltage is incorrect, check or replace the wiring or PCM
- Replace the BTS sensor if the problem persists after electrical tests.
If the problem persists despite these tests, it may be necessary to consult a professional for an in-depth diagnosis.