P1166 on elantra : help.

Status
Not open for further replies.
Joined
May 9, 2003
Messages
9,293
Location
Fayetteville, NC
This is about our 2003 Elantra.
we were climbing up Pike's Peak in CO in 2nd/1st gear when at about 13,000 feet where o2 levels in air is about HALF of normal level, CEL came on, car sputtered and won't go. We let it sit for a while, to cool off, and drove back down, and still CEL was on, but car now drives fine. went to autozone, got CEL cleared (only code was P1166); never came back on...yet.
I know that P1166 is related to O2 sensor (bank1) etc, and that it probably freaked out..that's what I think.
The only thing that worried me was that we used the low gear so much, and that it sort of sputtered and lagged when the cel first came on. Later it started and drove fine, with CEL still on.

the car is still under warranty. should I worry about this? (even if the CEL never came back)? As I said the car drives completely normal now.
This is what I could find about this code:
P1166 O2s (B1) Control Adaptation
P1166 Limit O2s Lambda Control (B1)
 
As long as it runs fine and the code doesn't come back, it should be fine.

I believe the same thing has happened to a relative's vehicle once while coming from the low lands to visit us in CO.

Yesterday was pretty darn hot and crawling up Pike's Peak is a big work out for an engine - especially if the computer is going bonkers as the oxygen levels keep plummeting minute by minute.

Did they check your brakes at glen cove? That's another thing you have to watch out for in the mountains - if you ride the brakes on long descents you'll overheat them. Downshifting, even with an automatic, is essential.
 
I don't have access to Hyundai codes, but the fail codes are supposed to be universal.

GM says that's not a recognized error code.
 
Per generic OBDII tables, P116* codes look like they are related to fuel control, fuel rail sensor? etc.. I've never seen an O2 sensor cause an engine to all out die. A funky fuel pump would though. If it's gone now, there's really nothing you can do but wait to see if it rears it's ugly head again.

Joel
 
Status
Not open for further replies.
Back
Top Bottom