Question about Cadillac Eldorado
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Posted on Jan 02, 2017
Hello i can help in front of your knees when you sit in drivers seat that panel has to come off along the bottom edge 4 Philips screws remove them panel comes off you will See the black square box 1inch by 1 inch or a round clear flasher 3 prong when unplugged.
Posted on Jan 03, 2011
Testimonial: "The response I recieved was right on the money! I was able to replace the part on my Cadillac Eldorado. Many Thanks!!!"
SOURCE: pcm code po139 eldorado
P0139: O2 Sensor CKT Slow Response (Bank 1 Sensor 2)
- Rear Heated Oxygen Sensor Bank 1 harness is open or shorted
- Rear Heated Oxygen Sensor Bank 1 circuit poor electrical connection
- Faulty Rear Heated Oxygen Sensor Bank 1
- Inappropriate fuel pressure
- Faulty fuel injectors
- Intake air leaks may be faulty
- Exhaust gas leaks
Posted on Feb 07, 2012
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