P2AB4

Cold Start Intake Manifold Runner Control Stuck Open Bank 2

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$33–167 (est.)

Symptoms

Unstable engine idling
Reduced power at low speeds
Increased fuel consumption
Check Engine Light Illuminates
Cold start problems

Causes

Mechanical jamming of the damper
Damper actuator malfunction
Wiring Harness Problems
Accumulation of deposits on the valves
Engine control unit malfunction

How to Fix

Visual inspection of dampers and drive mechanism
Checking electrical connections and wiring harness
Cleaning the flaps and axles from deposits
Checking the operation of the damper drive
Replacing faulty components

Related codes

P2AB3 P2AB5 P2004