What does P1416 mean on a Chevy?

P1416. Secondary Air Injection System Bank 2. Applies to Corvette, Silverado, Sierra, Tahoe, Yukon, TrailBlazer.

What causes P1416 on a Chevy?

Failed secondary air injection check valve on Bank 2 Seized AIR pump from moisture ingestion Carbon-clogged Bank 2 AIR ports in the exhaust manifold Ruptured AIR vacuum supply hose to the Bank 2 shutoff valve

How do I fix P1416 on a Chevy?

Command the AIR pump on with a Tech2/GDS2 scan tool and verify airflow at the Bank 2 hose Remove the Bank 2 check valve and test one-way flow before replacing parts Inspect the AIR pump for water intrusion since one pump feeds both banks Clear carbon from manifold AIR passages with the valves removed

Code

P1416

Secondary Air Injection System Bank 2

Category: Powertrain - Auxiliary Emissions Controls
Severity: Check Engine Light
Applies to: Corvette, Silverado, Sierra, Tahoe, Yukon, TrailBlazer
Related: No single generic twin. See OBD Codes List

What it means

P1416. Secondary Air Injection System Bank 2. This Chevy-enhanced code applies to Corvette, Silverado, Sierra, Tahoe, Yukon, TrailBlazer.

Findings, check these first

Failed secondary air injection check valve on Bank 2
Seized AIR pump from moisture ingestion
Carbon-clogged Bank 2 AIR ports in the exhaust manifold
Ruptured AIR vacuum supply hose to the Bank 2 shutoff valve

Standard procedure

Command the AIR pump on with a Tech2/GDS2 scan tool and verify airflow at the Bank 2 hose
Remove the Bank 2 check valve and test one-way flow before replacing parts
Inspect the AIR pump for water intrusion since one pump feeds both banks
Clear carbon from manifold AIR passages with the valves removed

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Sources and review

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Last updated 2026-09-13.

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