F430 F430 BANK 1 & 2 and SENSOR 1 & 2 ? - Ferrari Life
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post #1 of 3 Old 12-13-2018, 11:08 PM Thread Starter
Join Date: Dec 2018
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F430 BANK 1 & 2 and SENSOR 1 & 2 ?

Quick question on banks and O2 sensors when it comes to error codes:

P0420 - Catalyst System Efficiency Below Threshold (BANK 1)
P0430 - Catalyst System Efficiency Below Threshold (BANK 2)
P2198 - O2 Sensor Signal Stuck Rich BANK 2 (SENSOR 1)

May I know, where is the system referring to for BANK 1 and BANK 2 ? And Sensor 1 and Sensor 2 ?

I have an image below illustrating the 2 O2 sensors (Green & Blue) on one side of the F430 engine:

Bank 1 refers to the RIGHT side of the engine and Bank 2 refers to the LEFT side of the engine ?
Sensor 1 refers to the PRECAT 02 Sensor (at the headers) and Sensor 2 refers to the POSTCAT 02 Sensor ?

I have an aftermarket high flow cat I know, but shouldnt this only trigger Sensor 2 and not 1, since Sensor 1 means PRECAT (at the headers) ?
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post #2 of 3 Old 12-14-2018, 02:17 AM
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Join Date: Sep 2007
Location: Switzerland
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Please have a look to this thread I posted a while ago where you can easily identify engine Banks & firing order

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post #3 of 3 Old 12-14-2018, 06:25 AM Thread Starter
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Hey Stef, thanks for pointing me to the right direction. Now I understand that Bank 1 is on the right side and bank 2 is on the left side. Sensor 1 also refers to the sensor right after the headers and sensor 2 refers to the sensor at the main cats.

Just to clear it up for anyone else facing the same question. I have a P2198 error code showing "O2 Sensor Signal Stuck Rich bank 2 sensor 1".

I would replace the O2 sensor to see if it helps even though I have high flow cats which should, theoretically only show sensor 2 being at fault.
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