P0515Battery Temperature Sensor Circuit
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Needs a drive cycle to confirm a fix
- How the car detects it
- The battery temperature sensor – usually an NTC in the battery tray or inside an intelligent battery sensor on the negative terminal – lets the module adjust the charging voltage (higher when cold, lower when warm) and supports battery management and start-stop. P0515 is its general circuit fault – open or short – without separating low and high; the charging voltage is then fixed or conservative. No manufacturer document available to us names this code; the description follows CARB's input component rules. A fixed substitute temperature is then used.
- What you may notice
- Possibly check engine light
- Charging voltage not temperature-compensated
- Start-stop or battery management limited
- Likely causes
- LikelySensor or connector corroded (battery acid)
- PossibleWire open or chafed
- PossibleSensor not plugged in after a battery change
- RareModule
- Repair
- Easy · Often possible to do yourself.Typical cost: €20 – €150
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.