Skip the auto shop - Our mechanics make house calls

Q: Fuel trim bank 1

asked by on

I have a mitsubishi Pajero io but I have a problem where it shows that there is some form of fuel trim bank 1 showing up now I don't kno wat to do r how to get the problem solved

If your vehicle is having issues with the fuel trims, this is usually an issue with the powertrain control module or engine computer. The powertrain control module is responsible for setting and adjusting the fuel trims as the vehicle is driven. The fuel trims are always based on the conditions that the vehicle is being driven in.

I would recommend having your vehicle’s PCM tested with a high tech scan tool by a qualified professional, like one from YourMechanic. They can come to your home or office to service your vehicle and determine what types of readings the PCM is giving off.

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

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: Temperature gauge erratic/ rpm erratic

Most likely this is a problem with the instrument cluster. Even so, I would make sure your vehicle isn't actually overheating. The best method for doing this is with the use of a infrared temperature gun. They aren't cheap, but...

Q: 4.0 lt is very sluggish. no exhaust restriction, fp is ok 45psi, all new tune up.

Hi there. What you're describing may be an underlying fuel pressure concern. Check for any stored codes in the engine computer before replacing any more components. If there are no stored codes, a diagnostic tool will be required to monitor...

Q: Getting 2 then 4 abs codes, brake shutters, speedo dies and engine slowes when Brake and absolutely lights come on,

You definitely want to start by inspecting the front and rear wheel speed sensors; a failure in these circuits will result in several other problems. Begin by connecting a scanner to see if the Powertrain Control Module (PCM) is registering...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
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...