Skip the auto shop - Our mechanics make house calls

Q: Fuel bank sensor

asked by on

I've had a diagnostic done on my BMW 325i E46, and been told that the fuel bank /trims are faulty. Is anyone able to tell me if this is an big job? Or expensive job to have replaced.

My car has 14020 miles.
My car has a manual transmission.

A: There are a few things that can cause vehic...

There are a few things that can cause vehicles fuel trims to vary from normal. A vacuum leak is a big thing. Broken or worn crankcase ventilation hoses and gaskets that are failing to seal can cause lean conditions. If you have a malfunctioning ignition coil or leaking fuel injector this is another case that can throw off the fuel trims. Saying that the fuel bank / trims are faulty still means that there is some diagnosing though. You will need to have a more complete diagnosis or a more specific description of the faulty components in order to verify whether this is a small or expensive job.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Moving a rusted car

Hello. If it will not move because of the rust built up on the rotors and pads, then the wheels and calipers should be removed and the rust cleaned from the rotors and pads. This will help to free it...

Q: Reason for car continually stalling can't be found by dealerships

Hi. We will be happy to help you. I believe that you have a brake hardware component coming out of place at times and scraping against a moving surface. This is a common occurrence. Another common occurrence that could cause...

Q: Car died while driving. What's the cause?

Hello. When the vehicle has been in an accident, there can always be a lot more damage than what appears on the surface. The amount of force the vehicle took when it hit the light most likely started the issues...

Related articles

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.