QuestionHi, Thx for the DLC location...
I am getting a P0171 01/02
and a P0010 02/02
for the codes.
The dealership told me it was the downstream O2 sensor causing the problem.
The P0171 01/02 code I suspect is the O2 sensor
with 01 as bank1 and 02 as sensor 2. (downstream)
Is this assumption correct?
The P0010 02/02 code is not as clear, but can we assume this was dropped because it corresponds with Fuel and air metering and auxiliary emission controls? - O2 sensor?
thx again...your help is very much appreicated!!!
Dan
-------------------------------------------
The text above is a follow-up to ...
-----Question-----
I have not replaced the sensor yet, but did purchase an ODBII reader to confirm the replacement. I can't seem to find the DLC for the reader in the 2000 Sonata 2.4L...I have checked for the location on the net and it is listed as a 2-0, indicating the location is under the dash to the left of the steering column (2) and the connector is open (0).
I see the fuse panel, but not see any open connectors for the reader.
Do you have any suggestions...
thx again
Dan
Thx
Dan
-------------------------------------------
The text above is a follow-up to ...
-----Question-----
The 2.4 Sonata dropped a code for the downstream O2 sensor but the check engine light has since gone out. If the check engine light comes on again, I was wondering if this sensor can be changed easily without a hoist or ramp. I have also seen many OEM sensors on the NET and am wondering if purchasing one of these is recommended. If so, can you recommend one that will work. Are there any considerations on wiring connections...etc
thx
-----Answer-----
Since the lamp went out on its own, I'd recommend disconnecting the battery for a few seconds to clear the code. That way, if the lamp comes back, you'll know the code reflects only the current problem.
The fact that the lamp went out on its own is a good sign. Usually that means that the problem hasn't been present for at least three drive cycles.
Depending on the emissions setup you have, it'll either be at the bottom of the manifold catalytic converter or at the rear of the main converter. The one at the bottom of the manifold converter, you could probably do on your back. The one behind the main converter will probably require ramps or jack stands. It should be plug and play on either one.
As for the sensors themselves, I can only speak as to the factory equipment sensors. They're quite reliable on the 2.4 engine. I've heard of some cases of aftermarket sensors not having the proper bias voltage. If you've got a question about a particular sensor, your best bet might be to post on an auto repair forum and see if anyone else has experience.
-----Answer-----
The connector is on the left side of the car, but to the right of the steering column. It's located just behind the bottom of the lower dash panel.
AnswerI'm not familiar with your code reader, but it would appear that 01/02 indicates code one of two, whereas 02/02 indicates code two of two.
P0171 simply represents a perceived lean condition problem, meaning that the required injector on-time to keep proper mixture is more than the computer thinks it should be. While it's possible this could be caused by a faulty upstream oxygen sensor, that's not typically the cause.
Most frequently, this code is caused by a faulty air flow sensor; i.e. the sensor reads a lower air flow than is actually occurring. I've also seen it caused by a leaking PCV hose.
P0010 doesn't apply to your vehicle. It refers to a camshaft actuator problem. Since you don't have a camshaft actuator, there's a communication issue with your code reader, or you've misread the code.
