How do you fix a P0491 code?
What repairs can fix the P0491 code?
- Replacing any damaged wiring, connectors, or other electrical components.
- Replacing the secondary air injection pump.
- Replacing the pump’s one-way check valve.
- Repairing or replacing any damaged vacuum hoses or fittings which could be causing a vacuum leak.
- Replacing pump fuses.
How much does it cost to fix a secondary air pump?
If your secondary air injection system is failing or damaged, then the secondary air injection system repair cost will run between $270 and $390. The labor should usually cost under $100, while the parts cost on average run at around $250.
What are the symptoms of a p0491 engine code?
Symptoms of a P0491 engine code may include. 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
How much does it cost to diagnose a p0491 code?
Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins. The cost to diagnose the P0491 code is 1.0 hour of labor. The auto repair’s diagnosis time and labor rates vary by location, vehicle’s make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
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
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.