Q: P0414 code

asked by on

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

Q: Q: Revving out of control

It sounds like you may have an issue with your idle air control valve on your 2011 BMW 328i. The idle air control valve is responsible for keeping the RPMs within a certain range during idling at a stop. If...

Q: Clunking noise from rear

Hi there. This is a somewhat common issue with the majority of the E90's and E46 BMW's. These motors have what is a called a dual mass flywheel which is commonly known for creating this kind of a slight clunk...

Q: Engine knocking, oil light on, engine quit

If you ran the engine out of oil until the engine quit or locked up, then you tried to add oil after the damage was already done. The engine bearings will need oil to work properly, and when you ran...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...