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

P2066

Fuel Level Sensor B Performance

Secondary fuel-level sensor B reads within range but plausibility check fails — value sticks, jumps, or does not match consumption.

SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number– / 66

Possible causes

  • Float arm sticks high

Inspection / repair

  • Difficulty: hard
  • DIY: shop recommended
  • Estimated cost: 120–800 €
  • Estimated time: 1–4 h
  • Component: fuel level sensor b

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