E-Class (W212) 2010 - 2016: E 350, E 550

P0236 turbocharger/supercharger boost sensor a circuit range/performance Help!

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Old 08-08-2022, 12:18 AM
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2014 Mercedes E550 4matic
P0236 turbocharger/supercharger boost sensor a circuit range/performance Help!

Hi all

i just got a 2014 Mercedes E550 4matic and today i got an engine light when i looked up the fault code i got

P0236 turbocharger/supercharger boost sensor a circuit range/performance

i am a newbie here and not very sure what is wrong and where to look

any help would be very appreciated

thanks in advance
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Old 08-08-2022, 03:53 AM
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2014 - W212.065 - E400 ( M276.820, 3 liter Turbo) RWD not Hybrid
On this W212 ............... there is M276 and M278 turbo thingy in discussion, still within 1st page .
Old 08-08-2022, 03:39 PM
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Thank you for your reply but it wasn't mentioned in that thread anything related to this specific error I still need to go through everything mentioned there to understand if it is same problem but different names

But thank you again
Old 08-09-2022, 04:40 AM
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2014 - W212.065 - E400 ( M276.820, 3 liter Turbo) RWD not Hybrid
You are using generic OBD2 scanner ...yes ?

Based on Xentry, but M276 3.0 turbo engine computer. Many DTC are the same for your M278 I am sure.
Go to https://mbworld.org/forums/e-class-w...code-list.html

Video no 2 of 5 for engine computer.
There are a few P0236xx




Basically this P0236xx DTC means, the turbo boost data is whacky/wrong/does-not make sense ,,,,,,,,,,,,,,,,,,


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Old 08-11-2022, 02:17 PM
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Thank you for all the info provided that actually helped a lot

Just for anyone having the same issue i found it was because of RaceChip which was installed by a previous owner he said it was not active but it looks like it was throwing some issues removing it solved the whole issue
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Old 08-11-2022, 11:00 PM
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2014 - W212.065 - E400 ( M276.820, 3 liter Turbo) RWD not Hybrid
Glad to hear you found the culprit.

Aha... so there is that dumb piggyback device called RaceChip.
https://www.racechip.com/downloads/E..._K2_ENG_V1.pdf

Sometimes I wonder, how easy people/consumer can believe this so called "TUNING", when what is being done is a sensor data cheating.
The piggyback intercept say a 10psi boost and cheat it, send it to engine computer and claimed as 8psi boost... so that engine computer will allow more boost.
The reasoning are all the same crap : Ohh OEM are always playing safe and not maximizing engine's potential yada yada, so we then maximize it

Lowering sensors reported values to cheat engine computer to allow more power is pure dumb at its finest.
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Old 08-12-2022, 04:51 PM
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I can not agree more
Old 08-12-2022, 06:26 PM
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What kind of retard would put one on. Never go full retard.

Please set it on fire, so that no one ever feels tempted to put it back on.
Old 02-27-2024, 05:31 PM
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(2008 Audi a4 Quatto 2.0t S-line)(2016 E400 Coupe)
Originally Posted by S-Prihadi
Glad to hear you found the culprit.

Aha... so there is that dumb piggyback device called RaceChip.
https://www.racechip.com/downloads/E..._K2_ENG_V1.pdf

Sometimes I wonder, how easy people/consumer can believe this so called "TUNING", when what is being done is a sensor data cheating.
The piggyback intercept say a 10psi boost and cheat it, send it to engine computer and claimed as 8psi boost... so that engine computer will allow more boost.
The reasoning are all the same crap : Ohh OEM are always playing safe and not maximizing engine's potential yada yada, so we then maximize it

Lowering sensors reported values to cheat engine computer to allow more power is pure dumb at its finest.
yep, I’ve been running a piggyback tune for three years now, Dinan one. My friend always makes fun of me for “priming the fuel pump” as my dad said for the Audi that he first gave me as my first car. (Old car) ((no fun)) but even if these fuel pumps are like magic and work instantly, the piggybacks do not. If you would like to not have this code, my best advice would be to actually turn the ignition on fully so two taps of the power button, and then fire the engine up, this allows the piggyback to gain power. Make sure it’s calibrated and operating before the engine is operating.

hope my advice helped at least somebody loves there biturbo like I do with my E400 coupe

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