What is the OBD II fault code p0491?
What is the OBD II fault code p0491?
OBD II fault code P0491 is a generic code that is defined by some manufacturers as “Secondary Air injection (AIR) system, Bank 1 Malfunction”, but sometimes also as “Secondary Air Injection System Insufficient Flow Bank 1”, by others.
What does p0491 stand for in air injection?
SPECIAL NOTES: While code P0491 indicates a relatively common fault on Secondary Air Injection systems, non-professional mechanics are nevertheless advised to read the section in the manual for the application being worked before attempting a diagnosis and/or repair of any Secondary Air Injection-related trouble code.
What is the diagnostic code for secondary air injection?
P0491 is a diagnostic trouble code (DTC) for “Secondary Air Injection System Insufficient Flow Bank 1”. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation.
What to do if your vacuum leak is p0491?
Solutions for P0491 may include: Repairing or replacing any damaged vacuum hoses or fittings which could be causing a vacuum leak Technicians note that this malfunction almost always occurs in times when the weather is cold.
OBD II fault code P0491 is a generic code that is defined by some manufacturers as “Secondary Air injection (AIR) system, Bank 1 Malfunction”, but sometimes also as “Secondary Air Injection System Insufficient Flow Bank 1”, by others.
SPECIAL NOTES: While code P0491 indicates a relatively common fault on Secondary Air Injection systems, non-professional mechanics are nevertheless advised to read the section in the manual for the application being worked before attempting a diagnosis and/or repair of any Secondary Air Injection-related trouble code.
P0491 is a diagnostic trouble code (DTC) for “Secondary Air Injection System Insufficient Flow Bank 1”. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation.
Solutions for P0491 may include: Repairing or replacing any damaged vacuum hoses or fittings which could be causing a vacuum leak Technicians note that this malfunction almost always occurs in times when the weather is cold.
