Code P0419, Secondary Air Injection System Relay "B" Circuit Malfunction

REALEST2010

MEMBER
2007 TOYOTA TUNDRA
V8
AWD
AUTOMATIC
44,890 MILES

I found out through hooking up my truck to a computer the code that is wrong with it but I dont know what on earth it means n what I would need o get it fixed. I dont have the money to get it looked at and get it fixed. So can you please tell me what this means? P0419 Secondary Air Injection System Relay "B" Circuit Malfunction

1 Reply

KASEKENNY

MECHANIC
18,907 POSTS

Basically this system just puts air into the exhaust system on cold starts so that it cuts down on emissions until the engine gets warmed up.

This is a common issue when the pump fails.

I am attaching the testing below. However, here is a guide that will help with testing this system:

https://www.2carpros.com/articles/how-to-check-wiring

Please look below for the testing detail that we need to run through. Please let us know if you have other questions. Thanks

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