P02B3

Cylinder 7 - Fuel Trim at Min Limit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Misfire in cylinder 7
Unstable idle
Reduced engine power
Increased fuel consumption

Causes

Faulty fuel injector of cylinder 7
Vacuum leak in cylinder 7
Problems with the ignition system (plugs, coils)
Oxygen sensor dirty
Malfunction of the mass air flow sensor (MAF)

How to Fix

Check the fuel injector of cylinder 7 (clean/replace)
Diagnose vacuum leaks around cylinder 7
Check the condition of the spark plugs and coils
Clean or replace the oxygen sensor
Check the MAF readings for compliance with the standard

Related codes

P02B2 P02B4 P0307