[MYounus]

Actually how many sensors are there in a CRV 2009?
One Mechanic told me that the 'Bank 1 Sensor 1' is to be replaced.
Another mechanic said that the 'Air Fuel Ratio Sensor' is to be replaced.
Are they the same?

 

[BDub]

Yeah. Sensor 1 is the air fuel ratio sensor.

 

[MYounus]

Bank 1 Sensor 1.
I have replaced it with NGK24835.
Now again the engine light has come up.
Now it is showing:
P1157 - Lack of downstream Heated O2 sensor (HO2S22) switch. Sensor indicates Lean (Bank #2).
What does it mean??

 

[Fortheloveofcar]

Silly question, but did you replace with the same part number? From my experiences Honda engine are abit finicky with the type of sensor you put in them. I use to have a V6 accord, replacing the bank 1 O2 sensor, throw a check engine light, same NGK brand just a different part number, replaced with the exact from the dealer CEL goes away. I believe this is the correct part number for it.

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