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Light engine p0491 - 2005 Dodge Stratus

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P0491 - Secondary Air Injection System Insufficient Flow Bank 1
Possible causes
- Intake leak
- Damaged AIR system components
- Faulty AIR Solenoid Valve
- Faulty AIR system relay

Posted on Oct 17, 2013


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P0491 code

bank 1 is the side of the number 1 cylinder ---you didnt specify vehicle but this is a generic code and the following link will help you in solving your problem
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It sounds like you have been driving the vehicle with the check engine light on for quite a while. All of these codes did not set all at once. You are going to have to do some serious diagnostics to find out the cause of each of those codes. They have to be addressed one at a time until all of the faults are fixed, all of the OBD Readiness Monitors have completed, and no codes are present. It's going to take a while, so get ready to spend the big bucks! You will be lucky if you do not end up with a catalyst efficiency code (P0420 or P0430) before it is all over with. (Continuing to operate the vehicle with the check engine light on can completely destroy the catalytic converters.)

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I have a code P0491 coming up on my 2004 Dodge Stratis, this is a secondary fuel injection system and don't know wear to start to correct this.

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This code is not fuel injection but air injection, replace the secondary air injection pump.

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