P2279

Intake Air System Leak Bank 1

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$6–56 (est.)

Symptoms

Unstable engine idling
Increased fuel consumption
Check Engine Light Illuminates
Reduced engine power
Possible misfires

Causes

Damage to the intake manifold
Worn or damaged seals
Cracks in vacuum hoses
Leaking intake system connections
Damage to the PCV valve or its hoses

How to Fix

Visual inspection of the intake system for leaks
Checking the condition of vacuum hoses and their connections
Smoke generator test to pinpoint leak location
Replacement of damaged components (hoses, gaskets, etc.)
Cleaning and checking the PCV valve

Related codes

P0171 P0174 P2270