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Mercedes Camshaft Postion Sensor

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Mercedes camshaft position sensor symptoms cost locationIn this article, we discuss Mercedes Camshaft Position Sensor / Camshaft Hall Sensor (CAM) problems, symptoms and how to replace the CAM yourself. Replacing the Camshaft Position Sensor (also referred to as Camshaft Hall Sensor) on a Mercedes-Benz is very easy and can be completed in less than 15 minutes, assuming you have the right tools.

Symptoms of a failed Camshaft Sensor

Wondering what happens when a crankshaft position sensor goes bad? Watch the following video to find out.

If the camshaft sensor has failed you will notice some or all of the following:

  • Check Engine Light – (CEL) / Service Engine Warning may turn on, and you will have a fault code related to the CAM sensor.
  • Intermittent starting – This is a very common problem if the Camshaft Sensor starts to fail. You may notice the car starts fine one day and then hesitates to start the next. It could also be that the car starts fine when cold, but if it warms up, it’s hard to restart it.
  • Loss of engine power – Less common but it is possible that the car may hesitate under acceleration or even trigger misfire codes. This is caused because the Electronic Control Module (ECM / ECU) does not receive any information from the CAM sensor, so it doesn’t know the crankshaft position.

Fault Codes related to Camshaft Sensor

mercedes benz fault codesP0340 fault code is often detected which points to camshaft position (hall) sensor fault. The problem could be the wiring or camshaft sensor itself or even the ECU.

How to replace the Camshaft Position Sensor on a Mercedes-Benz

Tools Required

FEMALE E-TORX (Star) Socket Set

Parts Required

You will be surprised how inexpensive a CAMshaft position sensor is. If you go to Amazon you will find CAM sensor for any Mercedes-Benz model. Visit the link below to check current prices.

MERCEDES-BENZ Camshaft Position Sensor

Step-by-step instructions

Follow these steps to replace the camshaft position sensor on your Mercedes-Benz E, C, S, CLK, ML Class and other models.

  1. Open the hood and locate the camshaft position / hall sensor.Location of hall sensor B6 1 sensor
  2. Unplug the electrical connector from the camshaft position sensor.unplug electrical connetor from camshaft position sensor
  3. Remove the bolt using E-8 Female Torx socket.remove camshaft sensor from its location mercedes e320 c320
  4. Pull out the old camshaft position sensor.Mercedes camshaft position sensor symptoms cost location
  5. Install the new camshaft sensor. Ensure that the old o-ring is removed and a new one is installed.
  6. Tighten the bolt to 8Nm or 70 in-lbs. Connect the electrical connector and replace the engine cover if removed.tighten bolt to specs with a torque wrench


Frequently Asked Questions

How much does it cost to replace Camshaft Position Sensor (Camshaft Hall Sensor) on a Mercedes-Benz?

The cost to replace the camshaft position sensor can vary from $150 to $300 depending on the auto repair shop and your location. You could replace the camshaft position sensor yourself in less than 15 minutes and spend

What happens when camshaft position sensor goes bad?

Once the camshaft position sensor fails on your Mercedes-Benz, you may start noticing any of the following: car will hesitate to start, engine cranks but it does not start or starts after several tries, engine runs rough, engine multiple cylinder misfire and lack of power or acceleration.

Where is Mercedes-Benz Camshaft Hall Position Sensor located?

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Camshaft position sensor on Mercedes-Benz cars with 6, 8 and 12 cylinder engines is located on the front of the engine toward the top, near the valve cover.

Location of hall sensor B6 1 sensor
Location of Camshaft Position (Hall) Sensor. Mercedes-Benz E-Class, S-Class, C-Class, ML-Class, CLK-Class, SLK-Class. All models with V6 M112 engine and V8 M113 engine.

How do camshaft position sensors work?

The camshaft position sensor is an electronic device used in gasoline engines to monitor the position or the rotational speed of the camshaft. The position location is used by the engine management system (also known as ECU/ ECM) to adjust the timing, fuel injection and other engine paramenters.

Possible Solutions to camshaft position sensor problem?

First, you need to replace or ensure the camshaft position sensor is working properly. Then you can perform further diagnosis and check the following.

  • Using a digital multimeter check the wires make sure there is continuity.
  • Unplug the electrical connector going to the camshaft position sensor.
  • Defective engine control unit (ECU) could also be the cause.

Is it CAM or CPS?

A common misconception about the CAMshaft position sensor or the hall sensor is its acronym. The correct acronym is CAM, not CPS. CPS stands for Crankshaft Position Sensor which monitors the rotational speed of the crankshaft.

How to test a camshaft position sensor?

Testing the camshaft position sensor is easy and can be completed at home using some basic tools.

Replaced camshaft position sensor but my check engine light is still on.

If you replaced the camshaft position sensor and your check engine light is still on, you may need to check if there are any other fault codes. To this you will need an OBD2 scanner. We highly recommend that you get a hold of an OBD2 scanner, some of them cost less than $20 USD. You can read this article that can help you choosing the right OBD 2 scanner for Mercedes-Benz.

Mercedes-Benz models.

These instruction will also help you if you have a newer Mercedes-Benz with V6 or V8 engine such as M272 and M273.

M112 V6 EngineM113 V8 Engine
1998–2005 C240
1998–2004 CLK240
1998–2004 E240
1998–2000 C280
1998–2006 S280
1998–2004 C320
1998–2004 E320
1998–2005 S320
1998–2003 ML320
1998–2005 CLK320
1998–2003 SLK320
2003–2008 Chrysler Crossfire
2001–2003 C32 AMG
2001–2003 SLK32 AMG
2005–2006 Chrysler Crossfire SRT-6
2003–2005 ML350
2003–2006 S350
2003-2006 SL350
1997-2000 C43 AMG
1997-2002 E430
1998-2003 CLK430
1999-2001 ML430
1999-2006 S430
1998-2008 G500
1999-2006 S500
1999-2006 SL500
2001-2006 CL500
2001-2006 ML500
2002-2006 CLK500
2003-2006 E500
2004-2006 CLS500
2008- SsangYong Chairman W
1998-2002 E55 AMG
2000-2001 S55 AMG
2000-2003 ML55 AMG
2001-2002 CLK55 AMG
2001-2002 CL55 AMG
2002-2003 G55 AMG
2004-2010 SLK55 AMG
2005-2007 C55 AMG
2003-2006 CL55 AMG
2002-2006 S55 AMG
2002-2008 SL55 AMG
2003-2006 E55 AMG
2004-2006 CLK DTM AMG
2004-2009 G55 AMG
2006 CLS55 AMG

 

2 comments

  1. There are 3 or 4 camshaft sensors in a 2007 MB E550. How do you know which one to replace.

    • If you had a proper scanner you will be able to test any of them. Also check the fault codes. The fault code may point you to the sensor that needs to be replaced. Driver side / left is bank one. Passenger side is bank two. Then you could have front or rear depending on the code.

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