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OBD-II Code

P0416 — Secondary Air Injection System Switching Valve B Circuit Open

The circuit controlling SAI switching valve B is electrically open, causing the valve to remain inoperative.

System Engine
Severity Medium
Safe to drive? Yes, with caution
Advanced scanner Yes

What does code P0416 mean?

The circuit controlling SAI switching valve B is electrically open, causing the valve to remain inoperative.

Common symptoms

  • Inoperative secondary air system
  • poor cold start performance
  • increased emissions

Possible causes

  • Broken wire
  • open solenoid coil
  • disconnected connector

Initial recommendation

Check circuit continuity, inspect wiring and replace valve or repair wiring as required.

Safety notice

This information is for guidance only and does not replace a physical vehicle inspection or diagnosis by a qualified mechanic. If the vehicle has severe power loss, smoke, a fuel odor, overheating, brake or steering problems, or any unsafe behavior, avoid driving it and seek professional inspection.

Analyze this code with MecaOBD

Use the app to combine code P0416 with your vehicle's actual symptoms for more complete diagnostic guidance.

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