okay so I just got back from Autozone and used there scanner port to read my ecu codes on my 2000 LS and heres the damage:


P0131 Primary Heated Oxygen Sensor (Primary HO2S) (Sensor 1) Circuit Low Voltage

P0132 Primary Heated Oxygen Sensor (Primary HO2S) (Sensor 1) Circuit High Voltage

P0141 Secondary Heated Oxygen Sensor (Secondary HO2S) (Sensor 2) Heater Circuit Malfunction

P1457 Evaporative Emissions (EVAP) Control System Leakage (EVAP Canister System)

Sooo im guessing BOTH of my o2 sensors are bad?? maybe grounded out?

And what does the P1457 code mean?? What leakage??

Any help would be greatly appreciated, thanks guys!

 

more than likely, yes, both of your o2 sensors are shot....obd2 4 wire oxygen sensors have more possibilities of fault than of those prior....while it may not affect anything now, eventually your mpg will deteriorate over time and the car may start to run like ***

i would replace them with denso...get the part # from autozone and buy them new from ebay for about $30 less a piece

as for the vapor leak, something as simple as an improperly sealed gas cap can trigger that code

check your gas cap to make sure it's secure...if so clear the code...if that code re-appears replace the gas cap as the rubber o-ring inside it can deteriorate over time and allow an air leak...then clear the code

if that isn't the fix then more than likely it's your vapor canister...which is a remote possibility at this point

 

good stuff!! thanks for the help man, well I just got the car about a month ago and the seller told me it NEEDS an o2 sensor, I see that the primary is there but havent gotten under the car yet to see if the secondary is there. So for the leak I should check the gas cap first? Anything else it can be? Thanks again