pugads650

So I just picked up my car from my local Indy and I'm still going into limp mode :-/ he replaced the ESP and the front Sam he was gonna replace the throttle body but was unable to source a replacement. These are the following codes the car has given me.

P0221
P2221
P0106

Here's some video of what the cars doing

pugads650

Parts replaced soo far

1.Coolant reservoir
2.both acceleration sensors
3.esp computer
4.front Sam

I'm gonna try replacing the Throttle position switch and throttle body tommorow if I'm able to source one.

biggking

What kind of car? make.year.model

pugads650

..

pugads650

2005 mercedes e55

biggking

P0106 = map sensor??

biggking

1 - p0221
2-4 - p2221

pugads650

I've gotten the p0106 code a few times

SPatykAMG

I'm curious as to why your mechanic is jumping straight to the computers themselves. Does he have a stars unit as it would probably give more info on this situation.

biggking

Points to map sensor..

pugads650

They specialize in just mercedes they have all the star diagnostic computers. They told me to just replace the throttle body and it'll fix itself but being that they replaced all this other stuff and it made no difference other then make it worse I have little faith in anything they say soo now I'm here lol.

SPatykAMG

Ya I'm not saying they don't know what they are doing but map and throttle body would have been a smarter starting point in my opinion.

pugads650

But would the map sensor make it go into limp mode like its doing ?? I'm soo over this damn car ughh

pugads650

I agree 10000%

SPatykAMG

Your limp mode is more likely related to the throttle body since as you said you have had the map code a few times before.

Roverron

Why is the outside temp reading saying 185F?

Is the car stock?

pugads650

It's just a bad ambient tempeture sensor.

Roverron

Im sure all of that plays a part in the car operating correctly.

is the car stock?

and if not who's tune is on the car.

stockC43

Just bring it by a dealer and get a proper diagnosis. It might save you from more headache in the long run. There are plenty of good MB Indy shops out there but for every one good one there is ten bad ones. Even if they make you feel good when you go there, they obviously can't fix your car. Where are you located? Possably sombody can recomend a shop in the area.

Bramage

Wait a sec.. When you start the car in the second video, your temp in cluster shows 185F... I assume this is the outside air temp, which means your sensor has fallen out of the grille and is laying in the engine bay (probably right under the radiator).. Mine fell out once and car ran like ****. I (again) assume the ECU uses this temp signal for other calculations.. could it be something so simple????

+1 on dealer.. i would not waste effort on relacing TB until you get a clear diagnosis.. I would start with that temp sensor.

pugads650

I'm gonna try unplugging the ambient temp sensor serif it fixes anything also quick quest do the s500 and e55 share the same throttle body I have one here ? Just wanna make sure before I pull it out

Critter

Temp sensor is a good place to start and cheap too. Bramage is correct this reading is used by engine ecu on start up. Other than that map sensor would be on the short list. Good Luck

pugads650

Yeahh I just tried the throttle body from my moms car s500 and it worked but I had to peddle the car to keepnit running. drove it around the block a few times and it runs fine no esp malfunction but I turned it off and restarted it and back to the same issue its like it has to relearn it each time.

And I unplugged the ambient tempeture sensor and it still reads 185 ????

SPatykAMG

Do you have a scan tool to read live data.

pugads650

I do but its not a verry good one.