OBDII Diagnostic Codes for 96 Northstar ???
Where can I find the complete lists of OBCII Codes for my 96 Deville with a Northstar.
I get a P1139 and it does not show up on my generic list? |
RE: OBDII Diagnostic Codes for 96 Northstar ???
DTC P1139 HO2S Insufficient Switching Bank 1 Sensor 2
The reason you cannot find it is because it is not a generic OBDII code. P = powertrain 1 = manufacture specific code. 0 = OBDII generic 1 = system area(fuel, ignition, trans ect.) 39 = code description A P0139 would set for the same problem, but a manufacture code may set before an OBDII code because the manufacture has a more specific set of parameters for trouble shooting a specific problem. Hope this helps. |
RE: OBDII Diagnostic Codes for 96 Northstar ???
FLCaddytech,
Thanks, Now I have another question. How do I know which sensor is Bank 1, Sensor 2. I assume that there are four sensors. Two on each bank. Regards, Mike |
RE: OBDII Diagnostic Codes for 96 Northstar ???
Bank 1 refers to the #1 cylinder bank (rear in this case)
Sensor 2 would be the second sensor downstream from the head. Your car could have 3 or 4 sensors, just follow the rear exhaust manifold. It will have 1 o2 sensor where the 4 runners join together. It may have 1 after the "Y" and 1 after the converter (4 sensor system)or just 1 after the converter (3 sensor system). Hope this helps. |
RE: OBDII Diagnostic Codes for 96 Northstar ???
Sometimes when i am unsure of an o2 sensor location i unplug one and see what new codes set.
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RE: OBDII Diagnostic Codes for 96 Northstar ???
Make sure u reset codes agter that, dont buy them from autozone, i did once and had to exchange them later
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