e92 M3 Issue - Advice Needed

[yashsb]

Hi Guys,

Got an issue on the vehicle - Limp mode as soon as the vehicle is started. Diagnosis says P2100 Throttle actuator open circuit.

Checked Throttles, cleaned it. Replaced one Throttle actuator (as only one bank was opening)- issue was sorted for 1 day and then presented itself again. Same P2100 error.

Anyone else experienced the same issue and have possible resolution ?

TIA

 

[gavsadler]

From what I’ve read, when one throttle actuator goes, the second one fails very soon after that, hence many shops advise to replace them in pairs.

Preventative maintenance would be to do the gears inside before any faults occur.

You may need to scan the car again and check where the fault is now

 

[Peter@AEW]

What Gavin said!

 

[Kyle]

From what I’ve read, once you start getting error codes from the actuators the gear replacements don’t work..

 

[Woodies]

From what I’ve read, once you start getting error codes from the actuators the gear replacements don’t work..

Yip!!! And a lot of times the gear replacement fail again anyway. Bit the bullet and replace both. M TAX

 

[Peter@AEW]

If the gear set is changed prior to EML light then you can expect no issues in the future.
If you get an EML light 95% of the time even with a gear set change the actuator electronics will fail.

Change them and you are in for roughly 24k

 

[yashsb]

Thanks Gents. Let me try changing the second one and see.

 

[yashsb]

Hi Gents,

Replaced both actuators with working ones from another vehicle and I am still getting the same error.

any advice?

 

[Peter@AEW]

Reset engine faults first

 

[yashsb]

Reset engine faults first

Tried that,

it clears the fault. on next start up - issue persists.

 

[Kish2604]

screenshot of the code and error description. Also you get ancillary data such as engine oil temp and so on.. please add as much info as possible.