OBD-II reference

All 9.533 generic OBD-II codes, explained in detail.

Causes, inspection steps and sources — a comprehensive DIY archive. Created and maintained with love for the detail. Good luck and have fun!

Powertrain generic / SAE

P0515

Battery Temperature Sensor Circuit

A general circuit fault is detected on the battery temperature sensor - open or short on supply, signal or ground.

SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number5 / 15

Possible causes

  • Open in sensor or wiring high

Symptoms

  • EV/hybrid system warning light on
  • Reduced power output or limp mode
  • Charging may fail or be slowed
  • Reduced electric range

Inspection / repair

  • Difficulty: easy
  • DIY: possible
  • Estimated cost: 60–220 €
  • Estimated time: 0.4–1 h
  • Component: battery temperature sensor
  • MIL / check engine light

Sources

References

How to read OBD-II codes

The first letter names the vehicle system, the second digit distinguishes generic from manufacturer-specific, the remaining digits group fault area and number.

PPowertrain: engine, transmission, emissions
BBody: chassis trim, comfort, interior
CChassis: suspension, brakes, steering
UNetwork: CAN, control modules, communication