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Quick OBD II CEL Question

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TooFastTooG

15+ Year Contributor
521
5
May 12, 2004
Plainfield, Illinois
Hey guys,

I finally got around to scanning my car to see what it throwing my CEL, and I got these two codes:

P0135 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
P0136 O2 Sensor Circuit Malfunction (Bank 1 Sensor 2)

Now from searching I was able to find out that the P0136 is the rear 02 sensor that needs to be replaced, but i'm having a hard time finding out what P0135 is, without thinking to hard, i'm assuming that it is my front o2 sensor? I just want to make sure Im correct before purchasing. Thanks in advance!
 
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