o2 sensors?
Thread Starter
Racer
Joined: Nov 2004
Posts: 267
Likes: 0
From: Kimberling city MO
o2 sensors?
I have been getting these 3 repeating codes followed by a check engine light? are these the o2 sensors? and if so which ones are they and do they need replaced. It is a completely stock 97 coupe with 37000 miles.
P0135 Heated Oxygen Sensor (HO2S) Heater Circuit Bank 1 Sensor 1
P0155 Heated Oxygen Sensor (HO2S) Heater Circuit Bank 2 Sensor 1
P0161 Heated Oxygen Sensor (HO2S) Heater Circuit Bank 2 Sensor 2
P0135 Heated Oxygen Sensor (HO2S) Heater Circuit Bank 1 Sensor 1
P0155 Heated Oxygen Sensor (HO2S) Heater Circuit Bank 2 Sensor 1
P0161 Heated Oxygen Sensor (HO2S) Heater Circuit Bank 2 Sensor 2
Team Owner
Joined: Apr 2001
Posts: 54,204
Likes: 180
From: S.W. Ohio. . . . . . NRA Life Member
Originally Posted by corvettefreak16
I have been getting these 3 repeating codes followed by a check engine light? are these the o2 sensors? and if so which ones are they and do they need replaced. It is a completely stock 97 coupe with 37000 miles.
P0135 Heated Oxygen Sensor (HO2S) Heater Circuit Bank 1 Sensor 1
P0155 Heated Oxygen Sensor (HO2S) Heater Circuit Bank 2 Sensor 1
P0161 Heated Oxygen Sensor (HO2S) Heater Circuit Bank 2 Sensor 2
P0135 Heated Oxygen Sensor (HO2S) Heater Circuit Bank 1 Sensor 1
P0155 Heated Oxygen Sensor (HO2S) Heater Circuit Bank 2 Sensor 1
P0161 Heated Oxygen Sensor (HO2S) Heater Circuit Bank 2 Sensor 2
Bank 1 = drivers side
Bank 2 = pass side
Sensor 1 = before the cats
Sensor 2 = after the cats
I'm sure someone here has experience with these specific codes, and will chime in here shortly.
Team Owner
Joined: Mar 2001
Posts: 21,325
Likes: 3,841
From: small town in S.E Pa. PA
St. Jude Donor '03-'04
If all of these codes came at onetime.. it could very easily be just the fuse.Mini fuse # 15 under hood.
the o2 heater cycle is displayed after two failed cold start cycles...
the o2 heater cycle is displayed after two failed cold start cycles...
Thread Starter
Racer
Joined: Nov 2004
Posts: 267
Likes: 0
From: Kimberling city MO
Originally Posted by Evil-Twin
If all of these codes came at onetime.. it could very easily be just the fuse.Mini fuse # 15 under hood.
the o2 heater cycle is displayed after two failed cold start cycles...
the o2 heater cycle is displayed after two failed cold start cycles...
Thread Starter
Racer
Joined: Nov 2004
Posts: 267
Likes: 0
From: Kimberling city MO
Well i replaced the front 2 O2 sensors and now i am getting this code
P0134 Heated Oxygen Sensor (HO2S) Circuit Insufficient Activity Bank 1 Sensor 1
what is the cause for getting this code, could it be a loose connection somewhere or bad ground?
P0134 Heated Oxygen Sensor (HO2S) Circuit Insufficient Activity Bank 1 Sensor 1
what is the cause for getting this code, could it be a loose connection somewhere or bad ground?
Thread Starter
Racer
Joined: Nov 2004
Posts: 267
Likes: 0
From: Kimberling city MO
Originally Posted by 1993_FD3s
well you are the guy who had the connector off what did the pins look like? was the harness rubbed or kinked? what mods?
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Le Mans Master
Joined: Aug 2002
Posts: 8,343
Likes: 824
From: Naples Florida
I have had the same exact thing happen to me 6 months ago. I got the same codes as you and plus my car ran like crap. I went and got my 02 sensors replaced and on the way home from the garage the check engine light came back on. Same codes as before. My car runs great ever since I had them changed out so maybe I think my PCM needs to be reprogrammed to erase that code.