One or both secondary air injection check valves may become restricted causing poor air flow resulting in illumination of the Check Engine Light. It is often recommend to replace both check valves even if a fault code is set for only one bank of cylinders. Replacing only one valve may result in a return trip to the repair shop.
Check Engine Light Due to Restricted Secondary Air Injection Check Valve on Chevrolet Tahoe
Average mileage: 143,037 (134,111–150,000)
Exhaust & Emissions affected: Gasoline
12 people reported this problem
1 person shared problem details
2001 Chevrolet Tahoe134,111Visitor
check engine light on diagonstic code p1416 something about secondary air injection bank 2. How do i fix that my self?
what does it mean, how do i correct it?
check engine light stays on,back rear light i always have to replaceand sometimes the front light
Check engine light comes on randomly and I don't have any symptoms of car running bad but chang...
Engine Light on constantly. Codes Read at Auto Zone: P0449 EVAP purge/vent solenoid circuit condition. Is this a dealer only part?