Secondary Air Injection Switching Valve A Circuit Malfunction

What This Means

The secondary air injection system component voltage is below the minimum expected threshold. This system pumps fresh air into the exhaust during cold starts to help the catalytic converter heat up faster and reduce cold-start emissions.

Common Symptoms

• Check engine light on
• Failed emissions test
• No noticeable driveability issues
• Possible air pump noise

Common Causes

• Failed air pump
• Stuck check valve
• Relay failure
• Wiring damage
• Clogged air passages

Estimated Repair Cost