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

P0AFC

Hybrid/EV Battery Pack Sensor Module

The HV battery pack sensor module reports an internal fault. Cell-level voltage and temperature monitoring may be impaired.

SystemPowertrain
Typegeneric / SAE
GroupP0
Range / numberA / FC

Possible causes

  • Internal sensor module fault high
  • Communication lost with BMS medium
  • Pack cell imbalance approaching service threshold 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: hard
  • DIY: shop recommended
  • Estimated cost: 500–3000 €
  • Estimated time: 3–10 h
  • Component: hv battery pack sensor module
  • MIL / check engine light
  • limp mode possible

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