P2636Fuel Pump B Low Flow/Performance
The second fuel pump runs but does not deliver expected volume or pressure. Worn pump, restricted filter, or leaking pressure regulator.
Can I keep driving? With caution
You can drive to the shop, but do not postpone the repair. The problem may worsen and damage other components.
Sistema Afectado
Motor · Powertrain
La falla pertenece al grupo motopropulsor (motor y gestión electrónica).
Espacio para vendedores de repuestos
Aún no hay un anunciante en este espacio.
Symptoms You Will Notice
What you may observe when this code appears
- Check engine light on Hard start
- no start
- or stalling under load Power loss especially at high load or rpm Possible long cranking time
Possible Causes
The components or conditions that trigger this code
- 1Worn impeller reduces volumetric efficiency Restricted in-tank or in-line fuel filter Pressure regulator leaks back to tank
How to Fix It — Step by Step
Recommended diagnostic and repair procedure
- 1Difficulty: medium. Estimated time: 1-4 hours. Estimated cost: €150-€
- 2DIY possible
Note: This information is for general reference. For precise diagnostics and safety repairs, always consult a certified mechanic.
Estimated Cost
Approximate range in USD (varies by region and shop)
Varies by diagnosis
* Diagnosis only: $50–$150
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