P20F8

Intake Manifold Runner Control Circuit Performance Bank 1

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–89 (est.)

Symptoms

Reduced engine power
Unstable idling
Increased fuel consumption
Check Engine Light Illuminates
Dips during acceleration

Causes

Damper control solenoid valve malfunction
Open or short circuit in control circuit
Mechanical jamming of dampers
Problems with the damper drive
Engine control unit malfunction

How to Fix

Check the condition of the control circuit wiring harness and connectors
Test the damper control solenoid valves
Check the mechanical part of the damper drive for jamming
Diagnose the engine control unit
If necessary, replace faulty components

Related codes

P20F9 P20FA P20FB