P0471 exhaust pressure sensor a circut range, Mercedes W245 OM640
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P0471 exhaust pressure sensor a circut range, Mercedes W245 OM640
Hello,
I'm experiencing an issue with my 2008 Mercedes B-Class (engine OM640). The problem is intermittent and occurs when I accelerate above 3000 RPM. At that point, I lose power from the turbocharger, and the engine won't go over 2000 RPM, making it especially sluggish uphill. Eventually, it triggers the check engine light.
I've already replaced the exhaust pressure sensor, but it didn't solve the issue. After watching some videos, I found that it could be related to the vacuum system. I checked for leaks but didn't find any. Could the issue be with the exhaust gas recirculation (EGR) pressure transducer? Or would my OBD scanner show a fault code for that as well?
Any advice would help!
I'm experiencing an issue with my 2008 Mercedes B-Class (engine OM640). The problem is intermittent and occurs when I accelerate above 3000 RPM. At that point, I lose power from the turbocharger, and the engine won't go over 2000 RPM, making it especially sluggish uphill. Eventually, it triggers the check engine light.
I've already replaced the exhaust pressure sensor, but it didn't solve the issue. After watching some videos, I found that it could be related to the vacuum system. I checked for leaks but didn't find any. Could the issue be with the exhaust gas recirculation (EGR) pressure transducer? Or would my OBD scanner show a fault code for that as well?
Any advice would help!
Last edited by Benji1998; Oct 5, 2024 at 03:20 AM.
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Joined: Jun 2014
Posts: 1,086
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From: Melbourne, Australia
2010 ML550 VIN WDC1641722A564750, 2010 B180
I doubt you will find the answer in this sub-forum. Look toward other forums here where the cars have the same engine. More likely to find clues there.
