P044F

AIR System Switching Valve A Circuit High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$33–111 (est.)

Symptoms

Check Engine Light Is On
Deterioration of engine performance during cold start
Increased emissions
Unstable engine idling

Causes

AIR valve circuit open
Short circuit to power in valve circuit
AIR solenoid valve malfunction
Wiring harness damage
ECU malfunction

How to Fix

Check the integrity of the wiring harness and connectors
Measure valve resistance AIR
Check voltage in valve circuit
Test the operation of the AIR valve
If necessary, replace the valve or repair the wiring harness
Reset the error and check the system

Related codes

P0410 P0418 P0449