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

P25D8

Fuel Level Sensor C Performance

The third fuel level sensor reading does not change as expected with consumption or refuelling. Float may be sticking, or the resistor track has localised wear.

SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / D8

Possible causes

  • Float arm stuck on baffle or fuel pump module high
  • Worn spot on the resistor track at common fill level medium

Inspection / repair

  • Difficulty: hard
  • DIY: possible
  • Estimated cost: 150–700 €
  • Estimated time: 1.5–4 h
  • Component: fuel level sensor c
  • Component: fuel tank
  • 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