Q: P0414 code

asked by on November 12, 2016

2003 BMW 325 Ci keeps throwing a P0414 code any suggestion

My car has 128660 miles.
My car has an automatic transmission.

Hi There, Code P0414 relates to the vehicle’s secondary air injection system which is a system that pumps air into the car’s exhaust system to reduce emissions by way of accelerating the catalyst in the catalytic converter. When the ECM detects more than a 10% fluctuation in the amount of air being pumped in, this will cause the code to trigger and be stored. This can happen when the pump is faulty or in some cases when the wiring to the pump is faulty. I would suggest having a professional from YourMechanic come to your location to diagnose and repair the vehicle.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

how hard would it be to change a solenoid? 2003 Jeep Liberty

Hi there - replacing shift solenoids generally involve draining transmission fluid, removing the pan and filter from the transmission, and sometimes, removal of the valve body of the transmission as well. This can be fairly involved, but still less expensive...

Overheating problems - 1985 Jeep CJ7

It sounds like you still have a blown head gasket or minute crack in the cylinder head or block, both of which can cause overheating. You mention that you "repaired the head," but don't identify what was done. I would...

How often to change the oil

Most of the time you will want to go with the manufacturer's recommendation for oil change intervals. However, if the oil change interval is a very high number such as one with five digits, I certainly dont think it would...

Related articles

How to Get BMW Dealership Certified
BMW car dealerships offer automotive technician jobs to mechanics who are certified through the Universal Technical Institute (UTI) program.
The Best Used Cars to Buy If You Live in a Tropical Climate
If If you live in a tropical climate, most of your vehicle purchasing concerns will be essentially the same as if you lived anywhere else – you want a car that looks good, offers decent gas mileage, and suits the...
The Best Used Cars to Buy if You Live Close to the Ocean
If If you live close to the ocean, your vehicle is going to be far more vulnerable to rust than if you lived further inland. And the fact is, when it comes to resisting rust, not all vehicles are created...