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

P0A82

Hybrid Battery Pack Cooling Fan 1 Circuit Low

Voltage on cooling fan 1 control circuit is below threshold, indicating short to ground or driver fault.

SystemPowertrain
Typegeneric / SAE
GroupP0
Range / numberA / 82

Possible causes

  • Short to ground high
  • Connector pins corroded - high contact resistance low
  • Harness chafing through insulation low

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: medium
  • DIY: shop recommended
  • Estimated cost: 200–900 €
  • Estimated time: 1–4 h
  • Component: battery cooling fan
  • Component: wiring harness
  • 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