bad cat code???

2006 DODGE TRUCK
98,000 MILES • V8 • 4WD • AUTOMATIC
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DGOLDENBERG1213
  • MEMBER
  • 17 POSTS
06 Dodge 2500 power wagon, 5.7 Hemi 4x4
2 new oB2 CATS, 02 SENSORS TEST OK.

RE FLASHED AT DEALER, RE FLASH LASTS ABOUT 100MI, THEN CODE RETURNS.

should I replace downstream 02"s even though they test ok.

What else should I be looking for?
Sep 15, 2011 at 7:57 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
What you need to do is have a live scanner hooked up to the vehicle while driving so you can see what is happening. It could be the O2 sensors, a wiring issue... With the scanner, it should identify what went wrong to set the light.
Sep 15, 2011 at 6:34 PM
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