car keeps throwing the same codes...help
Thread Starter
Le Mans Master
Joined: Apr 2003
Posts: 6,059
Likes: 2
From: Texas
car keeps throwing the same codes...help
While driving today my check engine light came on and I luckily just installed my Carchip scanner the day before to read codes and other readings...the following codes seem to appear every time the car is started:
P0157 O2 Sensor Circuit Low Voltage (Bank 2, Sensor 2)
P0300 Random/Multiple Cylinder Misfier Detected
P1416 Unknown Powertrain DTC (Manufacturer Controled, Auxiliery Emission Cont
and then this code came up twice, once while the car was in motion and then the next time the car was started: P0134 O2 Circuit No Activity Detected (Bank 1, Sensor 1)
now since each code is coming up every time the car is started, is this something that happened previously and is being stored in the computer? Each misfire code has the same information for engine speed, load, and vehicle speed, which I am assuming is what happened when it first threw the code and it just keeps repeating the infomation everytime the car is started.
Well what should I do first? I dont have the service manuals yet...i bought some from a forum member and should have them in a day or two...so what would you guys do first? Thanks
P0157 O2 Sensor Circuit Low Voltage (Bank 2, Sensor 2)
P0300 Random/Multiple Cylinder Misfier Detected
P1416 Unknown Powertrain DTC (Manufacturer Controled, Auxiliery Emission Cont
and then this code came up twice, once while the car was in motion and then the next time the car was started: P0134 O2 Circuit No Activity Detected (Bank 1, Sensor 1)
now since each code is coming up every time the car is started, is this something that happened previously and is being stored in the computer? Each misfire code has the same information for engine speed, load, and vehicle speed, which I am assuming is what happened when it first threw the code and it just keeps repeating the infomation everytime the car is started.
Well what should I do first? I dont have the service manuals yet...i bought some from a forum member and should have them in a day or two...so what would you guys do first? Thanks
Melting Slicks
Joined: Dec 2000
Posts: 2,719
Likes: 59
From: Fremont Oh
hey there,
Well there could be a couple things happening....
1. it could just be a bad O2 sensor and it is causing the right back to run lean causing the misfires....
That would be the first thing to check.
Second but probably less chance is that your catalytic converter is plugged causing the O2 to read strange.
What year is your car?
Mo
Well there could be a couple things happening....
1. it could just be a bad O2 sensor and it is causing the right back to run lean causing the misfires....
That would be the first thing to check.
Second but probably less chance is that your catalytic converter is plugged causing the O2 to read strange.
What year is your car?
Mo
Thread Starter
Le Mans Master
Joined: Apr 2003
Posts: 6,059
Likes: 2
From: Texas
car is a 96 LT1 with 83k and i recently replaced both O2 sensors before the cats about 6 months ago, but not the ones after the cat...the Bank 1 O2 Sensor 1 is the code that actually made the light come on also
Thread Starter
Le Mans Master
Joined: Apr 2003
Posts: 6,059
Likes: 2
From: Texas
ok i reset the check engine light with the chip and took the car out twice restarting it a few times and no codes came up...i am assuming the previous 3 repeating codes was from a previous event since they are not come up anymore
Thread Starter
Le Mans Master
Joined: Apr 2003
Posts: 6,059
Likes: 2
From: Texas
Originally Posted by Mo_Bandy
thanks ! uhm I would first check the connection, hopefully they put the wires out of the way of the exhaust. you may luck out to find that it is just unplugged....
Mo
Mo
Thread Starter
Le Mans Master
Joined: Apr 2003
Posts: 6,059
Likes: 2
From: Texas
Bank 1 O2 Sensor 1
Bank 2 O2 Sensor 1
you can see where it started to malfunction
http://www.sounddomain.com/memberpage/479196/7
go there to see pics until corvette forum approves them
Bank 2 O2 Sensor 1
you can see where it started to malfunction
http://www.sounddomain.com/memberpage/479196/7
go there to see pics until corvette forum approves them
Last edited by OrthoAggie; Dec 18, 2004 at 12:22 AM.
