eazywind

Just got my first car. A used 2003 Hyundai elantra GT with 79000 miles and
I have taken it over 40 miles on a drive twice and it has started to lose
power at about that point. First time it did it I was close to home and
made it ok. No engine warning light came on at that time. 2 weeks later on
my next drive over 40 miles, the car did the same thing. This time I was 40
miles away from my house. I let the car sit for about 15 minutes and was
able to make it home ok. This time, the engine warning light came on and
we went and got some Diagnostic codes pulled and they were P0705 (
Transmission Range Sensor Circuit Malfunction - PRNDL input ) and P1166 (
heated Oxygen sensor 1, bank 1, at control limit ). Engine warning light
has now gone out. I don't want to drive this car over 40 miles or so now
because of what has happened. What are my next steps? Thanks for any help.


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Mike Marlow

"eazywind" <easywind2@yahoo.com> wrote in message
news:9a8dd8e59eb3d350895dbb90c27fe554@localhost.ta lkaboutautos.com...
> Just got my first car. A used 2003 Hyundai elantra GT with 79000 miles and
> I have taken it over 40 miles on a drive twice and it has started to lose
> power at about that point. First time it did it I was close to home and
> made it ok. No engine warning light came on at that time. 2 weeks later on
> my next drive over 40 miles, the car did the same thing. This time I was
> 40
> miles away from my house. I let the car sit for about 15 minutes and was
> able to make it home ok. This time, the engine warning light came on and
> we went and got some Diagnostic codes pulled and they were P0705 (
> Transmission Range Sensor Circuit Malfunction - PRNDL input ) and P1166 (
> heated Oxygen sensor 1, bank 1, at control limit ). Engine warning light
> has now gone out. I don't want to drive this car over 40 miles or so now
> because of what has happened. What are my next steps? Thanks for any help.
>

Are you comfortable working on cars? If not (and it seems you may not be),
then your best bet is to take your car and your codes to a dealer or a
mechanic you trust. These are fairly common problems and you should not be
facing big charges.

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-Mike-
mmarlowREMOVE@alltel.net

hyundaitech

You'll likely need a range switch to cure the P0705, but the P1166 can be a
little trickier. P1166 simply indicates that either the oxygen sensor
reading is way out of whack, or the injector on-time required to achieve
proper mixture is way out of whack. While the upstream oxygen sensor is a
frequent culprit, the 40 miles scenario makes me wonder if you have a
problem with the fuel pump. Presuming you're not going to be able to
diagnose the P1166 issue yourself, you should take the car to be checked.

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