Skip the auto shop - Our mechanics make house calls

Q: Hello. I have to replace both the bank 1 and bank 2 cat. Does bank 1 and 2 refer to "right" and "left"? Thanks

asked by on

Need to replace bank 1 and 2 cat. Does bank 1/bank 2 mean right/left? they are listed in the auto parts catalog as right cat and left cat. Thanks

My car has 93000 miles.
My car has a manual transmission.

A: Yes, bank 1 and bank 2 is the same as left ...

Yes, bank 1 and bank 2 is the same as left and right. Bank 1 is the right side of the engine and bank 2 is the left. Before purchasing and replacing the catalyst, you should have a complete diagnosis of the codes you are receiving from the engine computer. You may need to do additional repairs before the catalyst is replaced or damage to the new catalyst may happen. I recommend having a mechanic verify the computer systems are clear of any problems before you can install the new catalyst. If you would like to have the car checked, a qualified professional from YourMechanic can verify the issue and move forward with any needed repairs.

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: missing catalytic converter.

A catalytic converter is a major component to your car's exhaust system. If this is truly missing, this would mean that someone would have had to have physically removed it which involves a fair amount of work as well as...

Q: How do you use the interior luggage compartment/emergency trunk release?

Your car is equipped with an important safety feature to prevent the possibility of someone being trapped in the trunk. The interior luggage compartment/emergency trunk release can be pulled at any time to open the trunk. Here’s what you need...

Q: When driving the car it feels like it's gone into a higher gear.

Hello, thanks for writing in. Is your Check Engine Light illuminated? Your description sounds like your transmission may be in "limp mode" which is usually 2nd gear in many transmissions. It is also possible that the sensation you are getting...

Related articles

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...
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.