P0491 Citroen Secondary Air Injection System Insufficient Flow Bank 1 Possible causes – Secondary air pump with no or low air flow– Secondary air bypass solenoid leaking /blocked or stuck open /closed– Secondary AIR air hose restricted– Secondary air vacuum hoses restricted or leaking Symptoms – Engine Light ON (or Service Engine Soon Warning Light)…
Tag: P0491
P0491 Chrysler Secondary Air Injection System Insufficient Flow Bank 1
P0491 Chrysler Secondary Air Injection System Insufficient Flow Bank 1 Possible causes – Secondary air pump with no or low air flow– Secondary air bypass solenoid leaking /blocked or stuck open /closed– Secondary AIR air hose restricted– Secondary air vacuum hoses restricted or leaking Symptoms – Engine Light ON (or Service Engine Soon Warning Light)…
P0491 Chevrolet Secondary Air Injection System Insufficient Flow Bank 1
P0491 Chevrolet Secondary Air Injection System Insufficient Flow Bank 1 Possible causes – Secondary air pump with no or low air flow– Secondary air bypass solenoid leaking /blocked or stuck open /closed– Secondary AIR air hose restricted– Secondary air vacuum hoses restricted or leaking Symptoms – Engine Light ON (or Service Engine Soon Warning Light)…
P0491 Cadillac Secondary Air Injection System Insufficient Flow Bank 1
P0491 Cadillac Secondary Air Injection System Insufficient Flow Bank 1 Possible causes – Secondary air pump with no or low air flow– Secondary air bypass solenoid leaking /blocked or stuck open /closed– Secondary AIR air hose restricted– Secondary air vacuum hoses restricted or leaking Symptoms – Engine Light ON (or Service Engine Soon Warning Light)…
P0491 Buick Secondary Air Injection System Insufficient Flow Bank 1
P0492 Buick Secondary Air Injection System Insufficient Flow Bank 2 Possible causes – Intake leak– Damaged AIR system components– Faulty AIR Solenoid Valve– Faulty AIR system relay Symptoms – Engine Light ON (or Service Engine Soon Warning Light) Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century –…
P0491 BMW Secondary Air Injection System Insufficient Flow Bank 1
P0491 BMW Secondary Air Injection System Insufficient Flow Bank 1 Possible causes – Secondary air pump with no or low air flow– Secondary air bypass solenoid leaking /blocked or stuck open /closed– Secondary AIR air hose restricted– Secondary air vacuum hoses restricted or leaking Symptoms – Engine Light ON (or Service Engine Soon Warning Light)…
P0491 Audi Secondary Air Injection System Insufficient Flow Bank 1
P0491 Audi Secondary Air Injection System Insufficient Flow Bank 1 Possible causes – Secondary air pump with no or low air flow– Secondary air bypass solenoid leaking /blocked or stuck open /closed– Secondary AIR air hose restricted– Secondary air vacuum hoses restricted or leaking Symptoms – Engine Light ON (or Service Engine Soon Warning Light)…
P0491 Acura Secondary Air Injection System Insufficient Flow Bank 1
P0491 Acura Secondary Air Injection System Insufficient Flow Bank 1 Possible causes – Secondary air pump with no or low air flow– Secondary air bypass solenoid leaking /blocked or stuck open /closed– Secondary AIR air hose restricted– Secondary air vacuum hoses restricted or leaking Symptoms – Engine Light ON (or Service Engine Soon Warning Light)…
P0491 Secondary Air Injection System Insufficient Flow Bank 1
P0491 Secondary Air Injection System Insufficient Flow Bank 1 Possible causes – Secondary air pump with no or low air flow– Secondary air bypass solenoid leaking /blocked or stuck open /closed– Secondary AIR air hose restricted– Secondary air vacuum hoses restricted or leaking Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0491…