whmayhew Posted September 10, 2005 Report Share Posted September 10, 2005 My wife has a 1996 Cadillac Eldorado and the Service Engine Soon light came on this week. I have a Diablo Predator programmer that I used on my SS. It is also a scan tool. It came up with the following codes on the Eldorado. P0603 Control Module Long Term Memory Reset P1139 HO2S Insufficient Switching Bank 1 Sensor 2 P1140 Transition Time Ratio Bank 1 Sensor 2 Can anyone tell me where the problem is? I guess the Diable Predator is good for something. It sure did not do much for my SS. Link to comment Share on other sites More sharing options...
whmayhew Posted September 10, 2005 Author Report Share Posted September 10, 2005 My wife has a 1996 Cadillac Eldorado and the Service Engine Soon light came on this week. I have a Diablo Predator programmer that I used on my SS. It is also a scan tool. It came up with the following codes on the Eldorado. P0603 Control Module Long Term Memory Reset P1139 HO2S Insufficient Switching Bank 1 Sensor 2 P1140 Transition Time Ratio Bank 1 Sensor 2 Can anyone tell me where the problem is? I guess the Diable Predator is good for something. It sure did not do much for my SS. <{POST_SNAPBACK}> Link to comment Share on other sites More sharing options...
whmayhew Posted September 10, 2005 Author Report Share Posted September 10, 2005 Did some further research on a GM site. The HO2S is a Heated Oxygen Sensor. Does anyone know what this is? Link to comment Share on other sites More sharing options...
Ldogss Posted September 10, 2005 Report Share Posted September 10, 2005 its picking up that the second o2 isnt switching fast enough... Link to comment Share on other sites More sharing options...
BmanSS Posted September 10, 2005 Report Share Posted September 10, 2005 change the O2 sensor Link to comment Share on other sites More sharing options...
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