W203 C220 CDI Lack of Power On Pickup

hellgrace5

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Hello all !

I owned a W203 C220 CDI Mercedes. I have this problem. I pulled out 2 codes which are P1470 & P1403. I search around the forum and the P1470 code somewhat related to the boost controller around the turbo ? I thought of asking any professionals here to give me some more advice on these 2 codes.
 

rpe2

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His: 2018 E220 d; Hers: 2016 SMAX
Hi, and welcome to the forums.

As you put the engine under load, do you hear a loud woosh, or whistle?

It sounds as though your intercooler or one of your turbo pipes may have burst.
 
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hellgrace5

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Hi.

I heard the loud whistle and hoosh sound when under load.
i replace the intercooler yesterday because the left side plastic is cracked and leaking. And i checked every piping, there is no leakage. Still it does not solve my issue :(
 

rpe2

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Is your issue that the fault codes are there, or is it still lacking power?
 
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hellgrace5

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the fault codes and the lack of power. :cool::cool:
 
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hellgrace5

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@Blakey

Thanks for the info. May i know where is the vacuum boost pressure transducer located ? Is nearby the turbocharge, below air filter compartment ?

Thanks again:p
 
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hellgrace5

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Sorry for double post ! I have found the PRESSURE TRANSDUCER its infront of the coolant resevoir right. How do i determine if it is faulty. Thanks !
 
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hellgrace5

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@bump

Will very appreciate if someone enlighten me please ! Thanks in advance
 

Blakey

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Carefully take the hose off (not the one that vents via a filter to atmosphere) and suck the hose. If you can draw air up then you have a leak, if not then it's probably the sensor.

Chris.
 

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