SES Code-PO418 - Help?

[x10-wakerider]

My SES light came on today and the code is "PO418-Secondary Air Injection System Relay "A" Circuit Malfunction." Any idea what this is and how to fix it?

Thanks in advance!

[Wesman]

Sounds like a problem with the A.I.R. pump injection system.

Check the obvious first, look for the AIR pump in the engine bay (passenger side, front of engine, vertical cylinder with wires going to it) and look for any broken, frayed, or disconnected wires. If there are none to be found, then the problem is probably internal, in which case the pump itself may be going bad.

[2001NBMZ28]

Check the AIR PUMP fuse, if it's not blown look up the code at www.gearchatter.com for your year.