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#1
05-26-2009, 10:13 AM
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On Board Diagnostics OBD 1995 Deville 4.9L
What exactly is the difference between "Current" and "History" as it relates to the trouble codes?
When does a "current" code become "history"? Is a "history" code one that was detected in a previous drive cycle but not the last one? 
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#2
05-26-2009, 12:45 PM
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Re: On Board Diagnostics OBD 1995 Deville 4.9L
My codes are:
P039 HISTORY I039 HISTORY T02[7] CURRENT T025 HISTORY P039 = Torque Converter Clutch Engagement Problem I'm hoping a new solenoid will fix that, need to order the part. Did partial fluid change and installed new filter. Fluid was red. On one portion of the pan there was a stain that was darker and harder to remove than the rest of the fluid. If the pan is "L" shapped, it was on the inside corner, if I remember correctly. Does that signify anything? I039 = Loss of Road Sensing Suspenssion Data I assume that's due to having passive struts and not the original computerized ones. I'm not really worried about this one. T025 = LF Wheel Speed Sensor Continuity Fault T025 = LF Wheel Speed Sensor Fault Installed a new LF hub assembly and replaced break pads. I'm guessing there is a short or ground in the wire between the wheel and the computer. I plan to test that for continuity tonight. Last edited by Freakzilla69; 05-31-2009 at 01:29 AM. Reason: Oops! T027 was CURRENT
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