CEL at 1,200 miles

[Raven]

well mt CEL came on last night. brought it to the dealer and it was code P0420 Catalyst low efficientcy TSB 05-06-04-020A. they fixed it in 30 minutes!

[MotorMouth]

Any idea what they did? New cat?

[Raven]

nope. reprogrammed ECU, clear codes and re-learn crankshaht. i ask he said it was a new reflash. i had the most updated flash, but i guess this one is newer.

it was EE PROM - reprogramming (install new opcode: J6354

[MotorMouth]

Ahhhh. I see. Atleast it has not been in the shop 4 times before 1,200 miles like mine was

Say on a side note, got my muffler cut out last night and welded in a piece of exhaust pipe. Like the sound, feels good and it was free . Thanks for the idea.

[Chrome]

Just straight pipe and no muffler eh? How does it sound?

Later,
Chrome...

[WopOnTour]

Originally Posted by Raven

nope. reprogrammed ECU, clear codes and re-learn crankshaht. i ask he said it was a new reflash. i had the most updated flash, but i guess this one is newer.

it was EE PROM - reprogramming (install new opcode: J6354

Might have just been an "over-burn" (reflashing / overwriting the same calibration file over the existing identical file) I am not aware of any new calibrations available at this time , but if you would be willing to PM me your VIN I could check it in the system. The P0420 basically means your second O2 (after the CAT) was not observing sufficient oxygen content being created by the CAT. Sure it could have been a calibration issue, but my suspicion is that the over-burn just "reset" the statistical base-line used to set the DTC from. Interesting to see if the MIL pops up again over the next couple weeks.
Keep us informed
WOT

PS> The J6354 means that at least the tech got paid for a NFF!!

[MotorMouth]

Originally Posted by Chrome

Just straight pipe and no muffler eh? How does it sound?

Later,
Chrome...

I think it sounds great. I got the idea from Raven the other night at a local get together.

[Raven]

glad i helped you decide what to do with the exhaust

[WopOnTour]

Originally Posted by Raven

well mt CEL came on last night. brought it to the dealer and it was code P0420 Catalyst low efficientcy TSB 05-06-04-020A. they fixed it in 30 minutes!

Oh and that bulletin number DOES NOT pertain to the Redline- it is for the 2.2 L found in the "regular" IONs
WOT

[Raven]

Originally Posted by WopOnTour

Oh and that bulletin number DOES NOT pertain to the Redline- it is for the 2.2 L found in the "regular" IONs
WOT

so what does that mean?