The EML light illuminated a few days post-MOT on my wife's 2017 B180D equipped with the OM607 engine. I connected Xentry and retrieved a current and saved fault code of P009564. Intake air temperature sensor 2 (cylinder bank 1) has an electrical issue. There is an improbable signal.
I bought a new Pressure and Temperature sensor (B4/32), specifically a Bosch 0281006108, which was confirmed to be the equivalent of the MB A 607 905 34 00 component number. Upon fitting it today, I saw that it seems visually distinct, although it retains the same four-wire connection, hence I installed it. Upon starting the engine, I saw that the EML indicator remained on, leading me to conclude that I just needed to clear the code. I reconnected Xentry and the error code P009564 remains same, both current and saved. Upon examining the actual intake air temperature measurements, it indicated 20°C, which was likely accurate.
My cognitive faculties are rather perplexed.
Has anybody seen this same problem on this engine before, and what was the underlying cause?
I am perplexed by the mention of "Intake Air Temperature Sensor 2." Have I just replaced "sensor 1," or is there an additional "sensor 2" concealed that I have not identified?
Have I obtained the incorrect part?
Do I own a defective component (acquired via Amazon but allegedly authentic Bosch)? As there are no problems connected to MAP I am assuming that half of the sensor at least is operating OK.
All opinions are appreciated, and thank you for your attention.
Assistance requested about "P009564 - Electrical fault in intake air temperature sensor 2 (cylinder bank 1)." An improba
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GoodBoyCar
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I have spent more time looking at WIS and EPC and this is the seems to be the sole temp sensor on the air intake plus the WIS page to remove install is entittled "AR09.41-P-2002ORA Remove/install charge air temperature sensor".
Unless there are other proposals, I will proceed to return the Amazon sensor and get an MB one, then assessing my situation. Is the 20°C air intake temperature shown in Xentry an estimated value in the absence of sensor data?
Unless there are other proposals, I will proceed to return the Amazon sensor and get an MB one, then assessing my situation. Is the 20°C air intake temperature shown in Xentry an estimated value in the absence of sensor data?
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MercedesFan2022
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Temp sensors are numbered from the air input to engine, exhaust from engine to tailpipe.
The first incoming air is often in the Mass Air Flow (MAF), whereas the second will follow subsequently. If the TMAP is next, then that will be definitive.
If you're uncertain, disconnect the sensor and you should receive an error like intake air temp 2 open circuit or short circuit to power if you've the proper one. If you get a different index, you possess the incorrect one.
I am certain that Xentry provides the raw voltage readings for the temperature sensors. They may be really beneficial for comprehending the situation. You should always check wiring first rather than merely replacing the sensor.
A temperature sensor is essentially a variable resistor, making it difficult for even an inexpensive eBay model to malfunction.
The first incoming air is often in the Mass Air Flow (MAF), whereas the second will follow subsequently. If the TMAP is next, then that will be definitive.
If you're uncertain, disconnect the sensor and you should receive an error like intake air temp 2 open circuit or short circuit to power if you've the proper one. If you get a different index, you possess the incorrect one.
I am certain that Xentry provides the raw voltage readings for the temperature sensors. They may be really beneficial for comprehending the situation. You should always check wiring first rather than merely replacing the sensor.
A temperature sensor is essentially a variable resistor, making it difficult for even an inexpensive eBay model to malfunction.
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GoodBoyCar
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Thank you for your response. I conducted a first physical assessment of the wire and saw no apparent damage or corrosion. I will thoroughly examine it more and also assess the outcome of disconnecting the sensor. I will explore Xentry to ascertain available live data, voltages, and other relevant information.
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Sarah_Jane1980
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This specific sensor is located underneath the EGR valve atop the engine. There are two sensors, numbered 400 and 420, with sensor 420 often experiencing failure due to the component number superseding.
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GoodBoyCar
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Thank you for your response. Indeed, I examined these two sensors in the EPC, and for my VIN, they correspond to two distinct component numbers, with the 400 designated just as a pressure sensor.
Today, I can confirm that I have replaced the inexpensive Amazon component (marked 420 under the EGR) with one obtained from my local Mercedes-Benz dealership, at a cost over four times that of the original part.
The fault code was recorded and, once cleared, all issues were resolved.
The Amazon and MB components seem identical, contrasting with the original part. The only distinction is that one functions while the other does not.
The Amazon component is now undergoing the returns procedure for a refund.
The lesson learnt, or rather recalled from prior experience, is that sometimes I lack the financial means to purchase inexpensive components.
It may be necessary to repeat the task many times, which might either waste your time or, in the worst-case scenario, incur additional fees if you are hiring someone else to do it for you.
The task may need much more time. Additionally, there may be associated expenditures that escalate, such as new gaskets for the EGR, since it must be removed to access the bolt.
Let the buyer beware, as the saying goes...
Today, I can confirm that I have replaced the inexpensive Amazon component (marked 420 under the EGR) with one obtained from my local Mercedes-Benz dealership, at a cost over four times that of the original part.
The fault code was recorded and, once cleared, all issues were resolved.
The Amazon and MB components seem identical, contrasting with the original part. The only distinction is that one functions while the other does not.
The Amazon component is now undergoing the returns procedure for a refund.
The lesson learnt, or rather recalled from prior experience, is that sometimes I lack the financial means to purchase inexpensive components.
It may be necessary to repeat the task many times, which might either waste your time or, in the worst-case scenario, incur additional fees if you are hiring someone else to do it for you.
The task may need much more time. Additionally, there may be associated expenditures that escalate, such as new gaskets for the EGR, since it must be removed to access the bolt.
Let the buyer beware, as the saying goes...
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Sarah_Jane1980
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It is likely that you may substitute with an authentic Bosch sensor, since it is the original equipment manufacturer (OEM). I typically do not replace the EGR gasket, as it is metallic and can be reused.
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GoodBoyCar
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Indeed, I believe you are entirely accurate. I naively believed I had accomplished that; nevertheless, considering its low cost, I now doubt its authenticity. I want to resolve the matter promptly, and the most expedient choice was to visit the main dealer. I was only according to the WIS guidelines about the gasket. However, I must confess that I did not alter it the second time, since the engine had only operated for a few minutes.