P2BF1

Fuel Control System B Too Rich Bank 1

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–89 (est.)

Symptoms

Increased fuel consumption
Reduced engine power
Black smoke from the exhaust pipe
Unstable engine idling
Smell of gasoline from the exhaust system

Causes

Oxygen sensor malfunction
Problems with fuel injectors
Leak in the fuel supply system
DMRV malfunction
Problems with the EVAP system

How to Fix

Check oxygen sensor readings
Test fuel injectors
Check the fuel system for leaks
Diagnose mass air flow sensor and EVAP system
Reset error and test drive

Related codes

P2BF0 P2BF2 P0172