What Does P1416 Mean?
The port air circuit for Bank 2 of the secondary air injection system has malfunctioned. Air is not being properly delivered to the exhaust manifold on Bank 2 during cold start operations.
Common Causes
35%
Stuck or failed Bank 2 air bypass/diverter valve
30%
Blocked or disconnected air hose to Bank 2
20%
Failed Bank 2 check valve preventing air flow
10%
Faulty vacuum/electric control solenoid for Bank 2 valve
5%
Damaged wiring to Bank 2 diverter valve
Diagnostic Steps
1
Step 1: Locate Bank 2 air diverter valve and inspect for physical damage or disconnected hoses
2
Step 2: Command secondary air system on with scan tool and check for air flow at Bank 2 exhaust ports
3
Step 3: Test diverter valve operation by applying vacuum or power and listening for valve movement
4
Step 4: Inspect Bank 2 check valve for proper operation (air should flow one direction only)
5
Step 5: Verify control solenoid receives proper signal from PCM and operates correctly
Estimated Repair Cost
$150 - $600
Parts + labor, varies by vehicle and location
The port air circuit for Bank 2 of the secondary air injection system has malfunctioned. Air is not being properly delivered to the exhaust manifold on Bank 2 during cold start operations.
The most common cause of P1416 (Port Air Circuit Malfunction/ (AIR) System Bank 2) is: Stuck or failed Bank 2 air bypass/diverter valve
Typical repair costs for P1416 range from $150 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to drive. May cause emissions test failure and slightly elevated emissions on Bank 2 during cold starts.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1416 to identify the root cause.
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Quick Info
Category
Powertrain
System
Emissions Control - Secondary Air Injection
Difficulty
Type
Manufacturer
Recommended Tools
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