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I have 2013 ML350 Bluetec in limp mode. Scanned by iCarsoft MBII with return codes 149A00 and 155D00. I will be grateful for any suggestions or experience in this case.
1449A00 - "The output for the exhaust gas recirculation actuator (cylinder bank 1) has a short circuit to ground"
155D00 - "Check signal line to component 'Y27/9 (Exhaust gas recirculation actuator)"
I will be grateful for any suggestion or possible scenario and similar experience.
The fault codes are both relating to the EGR valve, so not sure why you would wash all the plugs on the harness...Id be focused on the EGR valve.. Its near drivers side firewall, top side of engine..
I have 2013 ML350 Bluetec in limp mode. Scanned by iCarsoft MBII with return codes 149A00 and 155D00. I will be grateful for any suggestions or experience in this case.
1449A00 - "The output for the exhaust gas recirculation actuator (cylinder bank 1) has a short circuit to ground"
155D00 - "Check signal line to component 'Y27/9 (Exhaust gas recirculation actuator)"
Experiencing same issue here, after my dealer replaced the fuel filter. Service advisor told me that the EGR positioner motor (part no. 642-150-05-94) needs to be replaced, NOT the EGR valve. It also requires 4x new ball joint clips (part no. 642-091-01-50) — all parts available from autohausaz.com for a total of $140 before tax & shipping. Here's a quote from alldatadiy.com:
"After evaluating the input signals, the CDI control unit uses a stored characteristic map to actuate the exhaust gas recirculation actuator (Y27/9) by means of a pulse width modulated (PWM) signal. The exhaust gas recirculation actuator increases or decreases, depending on its actuation, the quantity of recirculated exhaust which is directed into the charge air manifold via a mixing tube downstream of the throttle valve actuator (M16/6)."
I have yet to attempt to remedy the issue...any luck, ML350Blue?
Experiencing same issue here, after my dealer replaced the fuel filter. Service advisor told me that the EGR positioner motor (part no. 642-150-05-94) needs to be replaced, NOT the EGR valve. It also requires 4x new ball joint clips (part no. 642-091-01-50) — all parts available from autohausaz.com for a total of $140 before tax & shipping. Here's a quote from alldatadiy.com:
"After evaluating the input signals, the CDI control unit uses a stored characteristic map to actuate the exhaust gas recirculation actuator (Y27/9) by means of a pulse width modulated (PWM) signal. The exhaust gas recirculation actuator increases or decreases, depending on its actuation, the quantity of recirculated exhaust which is directed into the charge air manifold via a mixing tube downstream of the throttle valve actuator (M16/6)."
I have yet to attempt to remedy the issue...any luck, ML350Blue?
I have the exact same fault codes (149A00 & 155D00) on my -2010 E350. I replaced the Intake swirl flap actuator (A642 150 05 94) last week. Got the car back together yesterday but faults are still there.
I will probably replace the EGR valve as the next step.
Checked the wiring today between the EGR valve and the CDI control unit (ECU) with no faults found.
I have the exact same fault codes (149A00 & 155D00) on my -2010 E350. I replaced the Intake swirl flap actuator (A642 150 05 94) last week. Got the car back together yesterday but faults are still there.
I will probably replace the EGR valve as the next step.
Checked the wiring today between the EGR valve and the CDI control unit (ECU) with no faults found.
Any luck for you?
My dealer was 100% incorrect: The codes were indeed for the EGR valve — the actuator is intrinsic to the valve and is not available separately, though the unit can be repaired for $200 here:
I haven’t used this service. I did, however, remove the EGR valve (to see if it needed to be cleaned — it didn’t) and played with the actuator arm a bit, since it is kind of fascinating. Once I put it back in, it works most of the time.
Maybe you could remove the plastic cover and try lubricating the actuator arm with a light grease, such as lithium?
I bought a new cheap unbranded EGR valve from Ebay for £159,49 ($206,50). Replaced it and still had the exact same fault codes which made me sure it was something else. Took the car to the garage and they fixed it by installing a new genuine Mercedes EGR valve for £252 ($324)
After many hours troubleshooting and changing bits this summer. I finally had to leave the car to the garage and the problem was solved quick and easy only by installing a genuine valve instead of some cheap copy. At least I've learnt alot about the engine now.
But the car Is up and running fine again!
I have the exact same fault codes (149A00 & 155D00) on my -2010 E350. I replaced the Intake swirl flap actuator (A642 150 05 94) last week. Got the car back together yesterday but faults are still there.
I will probably replace the EGR valve as the next step.
Checked the wiring today between the EGR valve and the CDI control unit (ECU) with no faults found.
Any luck for you?
Hi Reshagen,
I have a 2013 w166 GL350 w the same codes. I want to check wiring from EGR to ECU like you did.
Where did you get the wiring diagram/ how to instructions?
cheers
Ken
Hi Reshagen,
I have a 2013 w166 GL350 w the same codes. I want to check wiring from EGR to ECU like you did.
Where did you get the wiring diagram/ how to instructions?
cheers
Ken
Hi Ken,
I'm sorry for the delayed reply.
I have an old laptop with WIS/EPC/ASRA installed on. So I just put in the VIN number from my car and then check the wiring diagrams.
If you still need help with this, I could check the wiring diagrams for your car.
My dealer was 100% incorrect: The codes were indeed for the EGR valve — the actuator is intrinsic to the valve and is not available separately, though the unit can be repaired for $200 here:
I haven’t used this service. I did, however, remove the EGR valve (to see if it needed to be cleaned — it didn’t) and played with the actuator arm a bit, since it is kind of fascinating. Once I put it back in, it works most of the time.
Maybe you could remove the plastic cover and try lubricating the actuator arm with a light grease, such as lithium?
I have dropped off the EGR valve for rebuilt that had same codes. Let see what I find when i replug rebuilt EGR.
Solution: I had 149A00. Called dealer for new part but they are out of stock everywhere with ETA atleast 8 months. Thanks for the suggestion of xeMODex in this forum. Luckily the shop is within driving distance from my location. I dropped off the part on Friday for rebuilt and got it back on Monday before noon. Installed the part and it works like the problem never existed.
According inspection report from xeMODex, open circuit fault found on the PCB. Reflowed module. Issues cleared.
I will totally recommend this place. See before and after photos attached for comparision. After rebuilt Before rebuilt
[CITATION=ML350Blue;7914164] J’ai 2013 ML350 Bluetec en mode boiteux. Scanné par iCarsoft MBII avec les codes de retour 149A00 et 155D00. Je serai reconnaissant pour toute suggestion ou expérience dans ce cas.
1449A00 - « La sortie de l’actionneur de recirculation des gaz d’échappement (banque de cylindres 1) a un court-circuit à la terre"
155D00 - « Vérifier la ligne de signal au composant 'Y27/9 (actionneur de recirculation des gaz d’échappement)"
Je serai reconnaissant pour toute suggestion ou scénario possible et expérience similaire. [/CITATION]
Solution : j'avais 149A00. Appelé revendeur pour une nouvelle pièce mais ils sont en rupture de stock partout avec ETA au moins 8 mois. Merci pour la suggestion de xeMODex dans ce forum. Heureusement, le magasin est à distance de conduite de chez moi. J'ai déposé la pièce vendredi pour la refaire et je l'ai récupérée lundi avant midi. J'ai installé la pièce et cela fonctionne comme si le problème n'avait jamais existé.
Selon le rapport d'inspection de xeMODex, défaut de circuit ouvert trouvé sur le PCB. Module refondu. Problèmes résolus.
Je recommanderai totalement cet endroit. Voir les photos avant et après ci-dessus pour comparaison.
Solution: I had 149A00. Called dealer for new part but they are out of stock everywhere with ETA atleast 8 months. Thanks for the suggestion of xeMODex in this forum. Luckily the shop is within driving distance from my location. I dropped off the part on Friday for rebuilt and got it back on Monday before noon. Installed the part and it works like the problem never existed.
According inspection report from xeMODex, open circuit fault found on the PCB. Reflowed module. Issues cleared.
I will totally recommend this place. See before and after photos attached for comparision.
After rebuild Before rebuilt
Not trying to spill the joy, but the picture shows sandblasting job, when reported problem was electronics.
Not trying to spill the joy, but the picture shows sandblasting job, when reported problem was electronics.
you are right. Sandblasting cleaning was one of the service completed in addition to reflawing the circuit to repair the short. IMO .. the carbon buildup on actuator makes the sliding action difficut due to friction and motor has to work hard or the actuator stays stuck open or close and that throw one or two of these EGR related codes.. total repair included short circuit repair, sand blast and grease.
you are right. Sandblasting cleaning was one of the service completed in addition to reflawing the circuit to repair the short. IMO .. the carbon buildup on actuator makes the sliding action difficut due to friction and motor has to work hard or the actuator stays stuck open or close and that throw one or two of these EGR related codes.. total repair included short circuit repair, sand blast and grease.
I have not have a problem with EGR for about 25 years, since Chevy engine in motorhome, even my MB are mostly high-mileage. (the E250 has 150k miles)
Can't come with good explanation why, other that I am hard believer in "Italian tuneups" and from time to time I floor it entering the freeway.
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