Replaced 02 Sensors now throws another code help...

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Oct 21, 2008 | 08:45 PM

CaMaRo67RS355

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Replaced 02 Sensors now throws another code help...

replaced my 02's saturday and drove it about 30 miles and it threw another code it said:

ecm has detected the switch ratio of rich to lean and lean to rich was below a determined number

Probable Causes:
-Failed Heater Circuit
-Signaled Shorted to ECM ground
-Improper oxygen supply to sensor-check connectors and wires

i have tsp true duals dumped before the axles with qtp headers. the rear 02's were deleted. i replaced them with brand new bosch corvette 13111 sensors.

i checked the 02's everything is hooked up properly...

has anyone had anything like this before?

is this something to worry about?

Last edited by CaMaRo67RS355; Oct 21, 2008 at 08:52 PM.

Oct 22, 2008 | 01:01 AM

Damian

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Is the car tuned? If not, that will probably clear it up for you.

Oct 22, 2008 | 06:35 AM

CaMaRo67RS355

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Quote:

Originally Posted by Damian

Is the car tuned? If not, that will probably clear it up for you.

yep its a cam only car with bolt ons and nitrous all that went on sept 07 and it was tuned by alvin anderson at pcm for less...

Oct 28, 2008 | 06:14 PM

CaMaRo67RS355

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anyone else???

Oct 28, 2008 | 06:15 PM

CaMaRo67RS355

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Oct 28, 2008 | 08:23 PM

DaveX

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It's very common with long tubes. They don't get hot enough to function correctly. I have the same problem and tried the same 02's and it didn't fix it for me either. Do a search for the actual code. Many never find a cure other than to run it in OL all the time, or delete the codes. It's not a good idea to drive it with these codes thrown, it will go into OL and run rich until the codes are cleared.