P2BEC

Fuel Control System A Too Lean Bank 1

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Unstable engine idling
Power Loss
Increased fuel consumption
Check Engine Light Is On
Possible misfires

Causes

Air leak in the intake tract
Malfunction of the mass air flow sensor (MAF)
Dirty or faulty fuel injectors
Problems with the fuel pump or pressure regulator
Malfunction of the oxygen sensor (lambda probe)

How to Fix

Check the intake tract for air leaks
Check the operation of the mass air flow sensor and clean or replace if necessary
Check fuel injectors for contamination and performance
Check fuel pressure and fuel pump operation
Check the serviceability of the oxygen sensor

Related codes

P0171 P0174 P2195