Hi, everybody. i have problem with this mercedes s class, 4.0 cdi, 2002 year made. Turbo is not kicking in, on live data boost pressure is always 800 hPa, wiring to boost sensor is good, sensor is new, from dealer. i tried to blow air into this sensor - parameter in live data doesn't change. if i disconnect power supply to ecu, and connect it back, i can start car and it runs ok for 10 seconds - with good power and etc. after that - no power, no turbo. there is only one trouble code in ecu and it is always active: p2013 - boost pressure / barometric pressure implausible or smthg like this. does anyone faced this problem ever? i spent whole day - no results.
p.s. there is lot of black smoke from one of the turbine, when it kicks in for that short time, but i think it's not related....
Last edited by genius76; 18th February, 2013 at 09:23 PM.
I can help you but only if you want me to help you
All the questions should start from what car, what year, what engine is what fuel. What are the symptoms of the problem. Only then is what you know, what fault code, live data, what you have done.
Your problem is in ECU. If you don?t find PM me.
zerocul (24th July, 2016)
If i unplug sensor there is another trouble code. I tried different voltages to ecu pin - no change.
Last edited by mafia666; 18th February, 2013 at 11:52 PM.
IS VERY related.... IT MEANS exhaust system dingy FOUL.take out exhaust from side you see the smoke and broke it,disconnected.plus check lash to turbo.
What code is in the ecm ?
This is a big vacuum leak in the system
code is p2013, one thing bothers me is that, i cannot delete this trouble code even on ignition on. car is not running - this trouble code is on. Shouldn't be, that boost sensor shows atmospheric pressure on ignition on? it doesn't change at all also if i blow air in it with air compressor. i disconnect ecu, and connect back - turbo kicks in for two times, after that - no turbo and no power.
about air leek - i am not sure 100 %, because i did not take all intake apart, but from top and front part on the engine there is no air leek. all pipes all aluminum in this car.
forgot to mention one thing - two egrs in this car are blocked with blind, but they are ecu is not reprogrammed. does this could cause problem? Does those cars should drive with egr blocked and not removed from ecu?
Have you checked the signal from the barometric sensor?
Maybe that's out of range.
p2013 refer to B28/ presure sensor short signal value.first check wiring after actual values must be from 4...6 to 5,1v.sensor is just near to oil check metal pointer.if everything is ok next is to unplug turbo electric cablle from potesiometer,this one is smoke.your problem is turbo charger...
I checked pressure sensor wiring before. now i stripped car - can not find any air leak, also i cannot reach the turbines to check axis and check if they are not loose. what will happen if i unplug cable from turbo actuator or what ever it is? car should run on one turbo? is it possible that pressure from one good turbo will go out through another bad turbo? How does those cars behave, if one turbo is broken?
some pictures from my work. i am just dreaming about next benz like this.
p.s. it's a bit of work to replace alternator belt on these cars
Bookmarks