Pulled two 02 Sensor codes...
Thread Starter
Melting Slicks
Joined: Jan 2005
Posts: 2,604
Likes: 0
From: Phoenix, Arizona
Pulled two 02 Sensor codes...
1996 LT4
PO132 = O2 Sensor Circuit High Voltage (Bank 1 Sensor 1)
PO152 = 02 Sensor Circuit High Voltage (Bank 2 Sensor 1)
I assume by this that I need to replace two different 02 Sensors. Is that the case, or are these codes related to only one sensor? I'm guessin' two.
Where are these sensors located? (left/right-front/rear of engine)
When purchasing 02 Sensors, are the four (or is it three) on my car the same?
Anyone w/ some experience w/ this, pls. respond.
Thx,
Jeff
PO132 = O2 Sensor Circuit High Voltage (Bank 1 Sensor 1)
PO152 = 02 Sensor Circuit High Voltage (Bank 2 Sensor 1)
I assume by this that I need to replace two different 02 Sensors. Is that the case, or are these codes related to only one sensor? I'm guessin' two.
Where are these sensors located? (left/right-front/rear of engine)
When purchasing 02 Sensors, are the four (or is it three) on my car the same?
Anyone w/ some experience w/ this, pls. respond.
Thx,
Jeff
Last edited by JEFNLSA; Aug 17, 2005 at 11:04 AM.
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
I am not sure if those are the front or rear O2s...
Logic would dictate that Sensor 1 is the lead O2, but, in the world of computers, we have an alarming tendency to start with 0!
Do you have the Helm Manual? If so, that should tell you which is which.
Logic would dictate that Sensor 1 is the lead O2, but, in the world of computers, we have an alarming tendency to start with 0!
Do you have the Helm Manual? If so, that should tell you which is which.
Race Director
Joined: Sep 2000
Posts: 17,298
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From: The Top of Utah
Don't shoot the messenger(s)!
Just because the O2s in both banks (that indicates two sensors) sent "Circuit High Voltage" readings, doesn't mean that both sensors failed simultaneously. What are the odds of THAT? You might suspect that the oxygen levels of both banks actually caused those readings. Sensors sense. Just because you don't like what they have to say doesn't mean they're wrong. Pull out your "hobbiest manual" (aka Helms) and start trouble shooting the REAL problem.
RACE ON!!!
Just because the O2s in both banks (that indicates two sensors) sent "Circuit High Voltage" readings, doesn't mean that both sensors failed simultaneously. What are the odds of THAT? You might suspect that the oxygen levels of both banks actually caused those readings. Sensors sense. Just because you don't like what they have to say doesn't mean they're wrong. Pull out your "hobbiest manual" (aka Helms) and start trouble shooting the REAL problem.
RACE ON!!!
Thread Starter
Melting Slicks
Joined: Jan 2005
Posts: 2,604
Likes: 0
From: Phoenix, Arizona
Just got my PCM back (pcmforless) and the car was throwin' the PO132 before I sent it & is still there. The PO152 is new. If it's throwin' these codes, do the sensors need to be replaced regardless?
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
No, that's what CFI-EFI is trying to tell you.
Do you have the Helm Manual? If not, get one, if so, start debugging. There is another reason for this beyond random chance that both O2s died at the same time. It is possible, but I am of a school that says debug versus throwing parts at it.
It COULD be a bad pair of O2s, but it might not, either.
Do you have the Helm Manual? If not, get one, if so, start debugging. There is another reason for this beyond random chance that both O2s died at the same time. It is possible, but I am of a school that says debug versus throwing parts at it.
It COULD be a bad pair of O2s, but it might not, either.
Thread Starter
Melting Slicks
Joined: Jan 2005
Posts: 2,604
Likes: 0
From: Phoenix, Arizona
1st off, I must sheepishly admit that I do not have a Helms. (Chiltons, but that doesn't count)
Let me get this straight...(no relation to that thread
)
My 02's could be fine and my problem/s could be elsewhere. I figured if they are throwing a code, they must be replaced.
If it was running lean, rich, too much air/fuel etc..., wouldn't I be getting those types of codes?
I'm only getting those codes, any guesstimations? Like I said the PO132 has been there for a bit (was planning to fix after I got my PCM back) but the PO152 is new.
Thx for the help...
Let me get this straight...(no relation to that thread
)My 02's could be fine and my problem/s could be elsewhere. I figured if they are throwing a code, they must be replaced.
If it was running lean, rich, too much air/fuel etc..., wouldn't I be getting those types of codes?
I'm only getting those codes, any guesstimations? Like I said the PO132 has been there for a bit (was planning to fix after I got my PCM back) but the PO152 is new.
Thx for the help...
Race Director
Joined: Sep 2000
Posts: 17,298
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From: The Top of Utah
Originally Posted by JEFNLSA
My 02's could be fine and my problem/s could be elsewhere. I figured if they are throwing a code, they must be replaced.
RACE ON!!!
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Race Director
Joined: Sep 2000
Posts: 17,298
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From: The Top of Utah
Originally Posted by JEFNLSA
I figured if they are throwing a code, they must be replaced.
RACE ON!!!
Thread Starter
Melting Slicks
Joined: Jan 2005
Posts: 2,604
Likes: 0
From: Phoenix, Arizona
Originally Posted by CFI-EFI
Let me put it in different terms. If you spot a burglar messing with your Corvette on your garage cam, what do you do? Buy a new camera???
RACE ON!!!
RACE ON!!!
I get it...Actually had it scanned by a friend last night and the 02's are reading fine, so the problem lies deeper within. I actually had someone email me all the diagnostic info relating to the 02's, so it's troubleshooting time.
Thx...
Drifting
Joined: May 2005
Posts: 1,336
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From: Chicago Executive Airport, formerly known as Palwaukee
No-IL Events Coordinator
St. Jude Donor '12-'13-'14-'15-'16-'17
I loved the analogy about the burglar!
With the diagnostic information I sent you, it is just a matter of time before you find the culprit!
Good Luck!
And let us know what you find!
Gregory
With the diagnostic information I sent you, it is just a matter of time before you find the culprit!
Good Luck!
And let us know what you find!
Gregory
Drifting
Joined: Aug 2004
Posts: 1,830
Likes: 1
From: atlanta Georgia
the p0152 is the rear sensor. maybe both not positive.
i am throwing same code.... i have 02 sims. called casper electronics(maker of the 02 sims)... and they said that the ones i had were faulty and they would replace them.
i have a 1996 obII car as do you. you have 4 02 sensors. the front 2 adjust AFR from the exhaust(these are a must!). the rear ones are for emmissions purposes. the 02 sims go on the rear ones.
you have 4 sensors. drop the exhaust check the sensors. and replace them. buy 2 02 sensors as you are throwing 2 codes. change out old 1's with the 2 new ones and change them around to find which ones are bad. if you dont wanna do that replace them all.
if you car isnt running like crap its prob both rear sensors. if it is you could have a combo of both.
your friend
Sean
i am throwing same code.... i have 02 sims. called casper electronics(maker of the 02 sims)... and they said that the ones i had were faulty and they would replace them.
i have a 1996 obII car as do you. you have 4 02 sensors. the front 2 adjust AFR from the exhaust(these are a must!). the rear ones are for emmissions purposes. the 02 sims go on the rear ones.
you have 4 sensors. drop the exhaust check the sensors. and replace them. buy 2 02 sensors as you are throwing 2 codes. change out old 1's with the 2 new ones and change them around to find which ones are bad. if you dont wanna do that replace them all.
if you car isnt running like crap its prob both rear sensors. if it is you could have a combo of both.
your friend
Sean
Safety Car
Joined: Sep 2000
Posts: 3,524
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From: Hinckley Ohio
Originally Posted by JEFNLSA
1996 LT4
PO132 = O2 Sensor Circuit High Voltage (Bank 1 Sensor 1)
PO152 = 02 Sensor Circuit High Voltage (Bank 2 Sensor 1)
Anyone w/ some experience w/ this, pls. respond.
Thx,
Jeff
PO132 = O2 Sensor Circuit High Voltage (Bank 1 Sensor 1)
PO152 = 02 Sensor Circuit High Voltage (Bank 2 Sensor 1)
Anyone w/ some experience w/ this, pls. respond.
Thx,
Jeff
I suspected on the advice of others that my sensors were getting lazy, so I changed all four sensors, just to be safe......DID NOT FIX THE PROBLEM!!!!!
I have noticed I always get the code around 3-5miles after startup.....probably about the time I am going closed loop.....later someone else reported this same thing on another LT4......
Many things could cause this code.....injector malfunction for example....
I have since got autotap and for sure my new sensors are not lazy
Car runs great and turns in great economy???
If someone figures it out please post.....
Drifting
Joined: May 2005
Posts: 1,336
Likes: 12
From: Chicago Executive Airport, formerly known as Palwaukee
No-IL Events Coordinator
St. Jude Donor '12-'13-'14-'15-'16-'17
PO152 is the front sensor on bank #2 (right side of engine).
Your engine is running too rich. Could be bad fuel pressure regulator (check for fuel in vacuum line). Could be too high fuel pressure. Rich injector. Leaking injector. EVAP canister fuel saturated. Bad MAF sensor.
All HO2S wires and connections should be inspected for breaks or contamination. HO2S wires actually carry oxygen to sensor.
The preceding is brought to you by General Motors.
1996 Y Platform
Corvette Service Manual
GMP/96-Y-2
BOOK 2 OF 2
Includes: Engine and Transmission
Your engine is running too rich. Could be bad fuel pressure regulator (check for fuel in vacuum line). Could be too high fuel pressure. Rich injector. Leaking injector. EVAP canister fuel saturated. Bad MAF sensor.
All HO2S wires and connections should be inspected for breaks or contamination. HO2S wires actually carry oxygen to sensor.
The preceding is brought to you by General Motors.
1996 Y Platform
Corvette Service Manual
GMP/96-Y-2
BOOK 2 OF 2
Includes: Engine and Transmission
Race Director
Joined: Sep 2000
Posts: 17,298
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From: The Top of Utah
Originally Posted by JEFNLSA
Well, you gotta appreciate the help (or the intent) regardless... 
RACE ON!!!
PS. Bogus, you saved me a PM.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 32
From: The Top of Utah
I readily admit knowing little in the way of specifics on the LT, Gen II, engines, and that I know virtually nothing about OBDII, but I'd like to hear more about this.
It's time to learn. again.
RACE ON!!!
Originally Posted by TorchRedlt4man
HO2S wires actually carry oxygen to sensor.
RACE ON!!!
Drifting
Joined: May 2005
Posts: 1,336
Likes: 12
From: Chicago Executive Airport, formerly known as Palwaukee
No-IL Events Coordinator
St. Jude Donor '12-'13-'14-'15-'16-'17
I consider myself an expert when it comes to the C4s and the LT1s and LT4s. Until tonite, I never knew about the oxygen being carried thru the wires for the O2 sensor. I guess I should do more reading of my service manuals!