1990 Cadillac Deville code identification

1990 CADILLAC DEVILLE
16,500 MILES • V8 • FWD • AUTOMATIC
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DAN SHORT
  • MEMBER
  • 1 POST
my service soon light is on. The code given is 49-air management. i can not find this number in any of my books. Could someone tell me what this code is referring to. Thanks.
Feb 2, 2009 at 12:27 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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FACTORYJACK
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 4,159 POSTS
Indicates a fault with the secondary air system. determined by oxygen sensor change when fresh air is diverted to exhaust. Possible causes: air pump, air management valve, exhaust a.i.r check valves, plumbing for system.
Feb 2, 2009 at 8:55 PM
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