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replace them both, if u reset n sends bad code replace otherone 4 real or go 2 a shop n spend 74 - 100 4 diagnostic
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∙ 14y ago
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How do you fix a p0420catalysteffiencybelow thrsehholdbank1?
When I had that problem on my 1997 buick lesabre, I had to replace the catalyst converter and the 02 sensor on it. It resolved the issue with the code.
What does code PO141 mean for a 1998 Buick Century Custom?
02 sensor problem
How do you check 02 sensor if is good or bad?
If it is bad the check engine light will come on and set a code for that particular sensor.
Where is the bank one sensor one located on a 2002 Buick Rendezvous?
Bank 1 sensor 1 was the upstream 02 sensor located before the catalytic con on my 03.
What would cause an 84 Nissan pickup to cut out when accelerating heavy?
Replace fuel filter and check the 02 sensor if the check engine light is on it's probably the 02 sensor run a diagnostic test to be sure
I have a 02 buick LeSabre custom when the key is turned to the run position all power and fuel to the engine is cut Had the starter tested works fine could it be the built in securety system?
Check your battery cables. Some computerized vehicles have to be reset. Disconnect the battery for about 5 minutes and then reconnect.
Where is the 02 sensor on a 95 Buick LeSabre and how do you disconnect it?
In the exhaust manifold or near the pipe, must raise car to get at it . better to work on when engine is cool,easer to to remove and you won't get burned.use never sieze if using old one again (new ones already have it on ) simply unscrews with wrench, do not force may damage threads
Why does my 02 kia stop when the service engine soon light comes on?
check the crank sensor
How do you tell a bad 02 censer?
The check engine light will illuminate if you have a bad O2 sensor. The code set will lead you to the faulty sensor.
How do you know if the 02 sensor is bad?
The check engine light would illuminate and the code set would help lead you to which sensor is at fault.
You have 2002 Buick La Sabre with service engine soon OBII code read P0171 bank 1 too lean Can replacing the O2 sensor fix this?
i doubt if you need an 02 sensor. try cleaning your mass air flow sensor with electronics celaner or brake cleaner first also check for vacuum leaks downstream from the maf
How can you tell if an 02 sensor is bad?
The check engine light would illuminate and the code(s) set would lead you to which O2 sensor is at fault or why the sensor set the code.
