P0416

AIR System Switching Valve B Circuit Open

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Symptoms

Check Engine Light Is On
Deterioration of the catalytic converter
Possible problems with idle speed

Causes

Open or shorted wiring harness
Air intake valve malfunction
Relay or fuse problems
Engine control unit (ECU) malfunction

How to Fix

Check the wiring harness for damage
Check the resistance of the air intake system valve
Check relays and fuses
Replace valve or harness if necessary