Check Engine Light Due to Restricted Secondary Air Injection Check Valve on Pontiac GTO

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.

RepairPal Verified
Average mileage: (–)
3 model years affected: 2004, 2005, 2006
3 people reported this problem
0 people shared problem details
Related Items:
A loose or worn gas cap or a faulty catalytic converter are two common items which can cause Ch...
MY QUESTION IS WHERE IS THE SECONDARY AIR INJECTION VACUUM CHECK VALVE LOCATED ON MY 2006 PONTI...
The flashing security lights comes on about 30 to 60 seconds after engine is shut off. Never w...
why the light track off come on when i driving