P0491 Code

P0491 Code is the troubleshoot procedure for Secondary Air Injection System Insufficient Flow.

It is important to know that when using this P0491 Code

P0491 Code Definition

What is P0491 Code (DTC Code)?

P0491 Code (DTC Code) is the troubleshoot procedure for Secondary Air Injection System Insufficient Flow.

DTC Code (Diagnostic Trouble Code) Explained

What is DTC Code (Diagnostic Trouble Code)?

A DTC, short for Diagnostic Trouble Code, also known as OBDII codes, is a code used to diagnose malfunctions in a vehicle or heavy equipment.

In this video, the DTC format is explained. How the 5 digit DTC is derived from DTC Hex code.

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Additional DTC Codes
P0492 Code
P0493 Code
P0494 Code
P0495 Code
P0496 Code
P0497 Code
P0498 Code
P0499 Code
P0500 Code
P0501 Code
P0502 Code
P0503 Code
P0504 Code