Armani23

90k on the mileage. Automatic, Car went into limp mode

tl type s code p2138 this code popped up. Shut the car off and restarted. Drove fine. But the idle bounces almost with a hesitation. Like lacking power. I’ve seen this code a lot for an APP sensor? But, my Type S is drive by wire. So I’m not sure if the fix that everyone does will work for mine ?

Thanks in advance.

05 Acura TL

That code is typically resolved by replacing the APP (Accelerator Pedal Position) sensor. All 04-08 TL's are drive by wire and use this sensor. Your car isn't any different, there is a short cable that goes from the pedal to the APP sensor and a faulty one can lead to some drivability issues, which can temporarily be fixed by shutting the car off and turning it back on.

Armani23

Sounds good. I’ll order the sensor. Thanks

05 Acura TL

There are a few test you can do prior to ordering a new one if you want to rule that out first. Just google P2138 for an Acura TL and you can find a few threads on this forum and others with some testing procedures. Mostly just using a multimeter to check the wiring, etc...