O2 sensor nightmare
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Joined: Apr 2018
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O2 sensor nightmare
Hey guys so I've been having trouble with my 03 ls 4 door. P0137 won't go away I've replaced the sensor and cleaned the connections but instead of the voltage reading around .45 volts like it should it's reading around .045 just bought it and this is my second blazer hopefully the cat isn't bad but that's what it seems to be pointing to any help would be appreciated
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Joined: Oct 2014
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From: North Central Indiana
Hey guys so I've been having trouble with my 03 ls 4 door. P0137 won't go away I've replaced the sensor and cleaned the connections but instead of the voltage reading around .45 volts like it should it's reading around .045 just bought it and this is my second blazer hopefully the cat isn't bad but that's what it seems to be pointing to any help would be appreciated
Just get a subscription to AlldataDIY for your vehicle and follow the factory diagnostic chart. Also read the requirements for setting the code. This code you can diagnose with a cheap scanner and a multimeter. You have several oxygen sensors, any of which can set this code, so make sure you are dealing with the correct one.
I think you will find your problem pretty easily if you will stop replacing parts as a diagnostic strategy and do it right.
Note that few codes automatically turn off the SES light right away when you have fixed the problem. Many require a certain number of key cycles or the code to be cleared using a scanner.
Good luck and best wishes for a successful repair.
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Joined: Apr 2018
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O2 sensor nightmare
well the o2 sensor code went out but now I have p0455 gross leak Evaporate, it sounds like when I turn the key off like I have a leak in the intake manifold , could that have been putting too much air into the system causing the code for o2 sensor and now throwing an evap code
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