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post #1 of 4 (permalink) Old 11-06-2012, 01:17 PM Thread Starter
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Code 13 need help.

I installed long tube headers about two weeks ago along with an ory. I ended up getting the ses light, so I scanned the code and it was code 13 which is open circuit on bank 1 for 02 sensor. I was wondering what exactly that meant. Does it mean i need a new 02 sensor, or is there a leak, or do i just need a tune for my car, which i plan on getting next week. Any help would be appreciated.

94 Trans am GT A4: CAI, intake elbow, 160 thermostat, boxed LCA, full poly bushings, !AC, TB bypass, flowmaster 3in dual exhaust, ory, pacesetter longtube headers, !AIR, !CAT, !EGR, subframe connectors, ZR1 wheels.
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post #2 of 4 (permalink) Old 11-06-2012, 03:50 PM
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Code 13 says your left (drivers) O2 is not switching properly. Could be a bad O2, or a circuit problem with the sensor leads or the two leads to the O2 heater. How did you extend the O2 wires, splicing between the O2 and it's connector will ruin them. You may have a pinched or burnt wire. Swap Os's left to right, reset the pCM (pull fuse or battery for a min or so) that will reset the DTC. If it moves to right it's the O2 otherwise it's wiring on the left side. Here is a schematic ref shbox.com http://shbox.com/1/1995_pcm2.jpg Forgot to add check O2 heater fuse, it feeds them both plus M6 tranny and EVAP, but it's something easy to do. .

I'm Bob.. 1994 Z28, A4, Stall, CAI, Cam, RR's, 342 rear, LT's , CatBack, Tuned

Last edited by bobdec; 11-06-2012 at 03:53 PM.
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post #3 of 4 (permalink) Old 11-06-2012, 04:48 PM Thread Starter
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I will check all that thanks! I think it's most likely the sensor is bad because I don't see any burnt wires plus I didn't need to use any extensions on the driver side it was able to reach and plug right in plus the ses light comes on occasionally only when I am cruising over 40 and it will shut off once I slow down. My gas mileage is really terrible though and I think some liquid that's used to break rust got into the sensor because the sensor was stuck in the old manifold.

94 Trans am GT A4: CAI, intake elbow, 160 thermostat, boxed LCA, full poly bushings, !AC, TB bypass, flowmaster 3in dual exhaust, ory, pacesetter longtube headers, !AIR, !CAT, !EGR, subframe connectors, ZR1 wheels.
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post #4 of 4 (permalink) Old 11-07-2012, 05:32 PM
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Agree, the O2 does not like certain chemicals, not sure how PB Blaster or WD-40 types of oils will effect it..

I'm Bob.. 1994 Z28, A4, Stall, CAI, Cam, RR's, 342 rear, LT's , CatBack, Tuned
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