Also: the check engine light went out on its own without resetting any of the codes. I'm assuming that means it's just barely on the threshold.

P2177 — System Too Lean Off Idle (Bank 1)


So I was able to get more data from the guys at the gas station. This is the exact P code version of the error their scanner shows, description text and all.

He let me dig around in the menus and I found what appear to be the live fuel trim graphs ...

If you are interested to make sure you have a better understanding of the problem- invest into diagnostic scanner. This way we can help you better narrow the issue based on data from o2 sensors, coolant temp sensor, maf sensor...

The thing you're not getting here is that if someone can just tell ...

it will be in your best intrest to obtain "basic" scanner as suggested above.

Well, like I've said, I can already get free scans from multiple places whenever I want them so I see little point in paying for any sort of "basic" scanner. Obtaining the error codes is not the problem here, I already ...

Do you have a scanner that can read fuel trims?

No. Honestly I know next to nothing about OBD scanners. The gas station and the auto store down the street both do free scans so I've never bothered to buy any of my own devices. The gas station's device was this giant ipad-looking thing, I guess I ...

Do you have any aftermarket things plugged into the 12V socket, or an aftermarket radio?

Nothing about this car is aftermarket except maybe the wiper blades. There are occasionally phone USB chargers or the like plugged into the cigarette socket, but not commonly. I don't think there were any ...

Did you ever repair/find a solution for this problem?


No. The dealers and shops I talked to about using an oscilloscope to investigate this all said it was above their pay grade, and since I wasn't even sure what I was looking for I didn't bother trying myself. The best suggestions I got was ...

Car is an errand-mobile that isn't driven much and only has 51K on it. Yesterday the check engine light came on. Did a full scan at the local gas station and their code reader reports only two codes:

212C Long Term Fuel Trim, Bank 1
21EC Long Term Fuel Trim, Bank 1

These codes seem specific to ...

She probably meant they don’t give estimates out over the phone.
I don't get that. So instead of saying "I need X job done what does that cost?" I need to drive the car over there just to ask the exact same question in person?

or pay what the dealer says is the current rate
The problem I'm ...

Trying to get some work done. Call the dealer for a quote but the lady on the line says flat out "we don't give estimates". Apparently I'm supposed to just drop the car off and they call after it's fixed or something? Is this normal behavior these days? The only thing I could get out of her was ...