Why is my secondary air injection pump not working?
Why is my secondary air injection pump not working?
A fuse or relay for the secondary air injection pump may be faulty A leak in the hoses/piping between the secondary air injection pump and the Combi or secondary air injection A sensor for the secondary air pressure may be faulty The secondary air injection port in the cylinder head may be plugged with carbon
What does a secondary air injection system do?
The secondary air injection system, commonly found on Audi, BMW, Porsche and VW vehicles – and may be found on other vehicles – features an air pump, an exhaust manifold, an input check valve, vacuum control switch, an electrical input circuit for the vacuum control switch and tons of vacuum hoses.
Why is my secondary air injection port clogged?
A sensor for the secondary air pressure may be faulty The secondary air injection port in the cylinder head may be plugged with carbon The secondary air injection ports in the cylinder head may by clogged Most of the diagnostic tests must be done when the engine is completely cold.
What causes a secondary air injection pump p0491?
Potential causes for a P0491 may include: A fuse or relay for the secondary air injection pump may be faulty A leak in the hoses/piping between the secondary air injection pump and the Combi or secondary air injection A sensor for the secondary air pressure may be faulty
A fuse or relay for the secondary air injection pump may be faulty A leak in the hoses/piping between the secondary air injection pump and the Combi or secondary air injection A sensor for the secondary air pressure may be faulty The secondary air injection port in the cylinder head may be plugged with carbon
What is the code for secondary air injection?
Bank #1 is the side of the engine with cylinder #1. For bank #2, see code P0492. Other secondary air injection system trouble codes include P0410, P0411, P0412, P0413, P0414, P0415, P0416, P0417, P0418, P0419, P041F, P044F, and P0492.
Potential causes for a P0491 may include: A fuse or relay for the secondary air injection pump may be faulty A leak in the hoses/piping between the secondary air injection pump and the Combi or secondary air injection A sensor for the secondary air pressure may be faulty
A sensor for the secondary air pressure may be faulty The secondary air injection port in the cylinder head may be plugged with carbon The secondary air injection ports in the cylinder head may by clogged Most of the diagnostic tests must be done when the engine is completely cold.
Bank #1 is the side of the engine with cylinder #1. For bank #2, see code P0492. Other secondary air injection system trouble codes include P0410, P0411, P0412, P0413, P0414, P0415, P0416, P0417, P0418, P0419, P041F, P044F, and P0492.
