o2 Sensor Codes

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Jan 27, 2011 | 03:23 PM

Calibur45

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Drifting

Joined: Jul 2008

Posts: 1,316

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From: Tulsa OK

o2 Sensor Codes

In the mornings i start the car, and within about 10 minutes of driving i get these codes.

P0135 Heated oxygen Sensor (HO2S) Heater Circuit Bank 2 Sensor 1
P0155 Heated oxygen Sensor (HO2S) Heater Circuit Bank 1 Sensor 1
P0153 Heated oxygen Sensor (HO2S) Slow Response Bank 2 Sensor 1

The car has LT headers w/ hi-flow cats. I tried to jack it up and look around, but didn't see anything clearly out of place. Could it be the sensors themselves or the wiring causing the issues?

Thanks in advance for your help.

Jan 27, 2011 | 03:32 PM

lucky131969

Tech Contributor

Joined: Jan 2007

Posts: 19,239

Likes: 1,091

From: Dyer, IN

Quote:

Originally Posted by Calibur45

Could it be the sensors themselves or the wiring causing the issues?

Yes to both, but unlikely for both sensor to have a problem. The only thing in common is the heater circuit.

Check minifuse #15 in the underhood fuse box.

Jan 27, 2011 | 05:35 PM