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

P26B3

Fuel Shutoff Valve A Control Circuit Performance/Stuck Off

The first fuel shutoff valve is commanded on but does not open. Fuel cannot reach the engine via this path.

SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number6 / B3

Possible causes

  • Valve seized closed by debris high
  • Solenoid loses force from coil aging medium
  • Carbon or debris buildup preventing free movement low

Inspection / repair

  • Difficulty: medium
  • DIY: shop recommended
  • Estimated cost: 180–900 €
  • Estimated time: 1–3.5 h
  • Component: fuel shutoff valve a
  • Component: solenoid
  • 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