2007 CLK63 TPS location Error Code P2122 - Mercedes-Benz Forum
 
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post #1 of 5 (permalink) Old 04-03-2019, 12:49 PM Thread Starter
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2007 CLK63 TPS location Error Code P2122

So I am getting P2122 error code stating the TPS circuit D has low voltage. I can't for the life of me pinpoint it exactly on the driver's side Anyone have any idea where it is? Should I remove the gas pedal and access it through there? Much appreciated!!
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post #2 of 5 (permalink) Old 04-04-2019, 08:02 PM
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First of all, stop using a generic OBDII scanner and get a tool that can read native MBZ DTCs.

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post #3 of 5 (permalink) Old 04-05-2019, 07:46 PM Thread Starter
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....I use a $400 interactive scan tool that has all vehicles from Porsche to Mercedes to Saab that does it all from reset oil light to calibrating cps sensor.

Anyone else can help me? This is 100% the problem as my car won't respond when I push the gas pedal taking 5 to 10 seconds to accelerate.
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post #4 of 5 (permalink) Old 04-05-2019, 08:06 PM
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i was not suggesting your tool was inferior or cheap, but it only reads generic OBDII codes from your car. Because it is required by the government, MBZ's systems are compatible with OBDII, but they have their own set of internal codes that are more descriptive and more specific to MBZ's electronics than what OBDII provides. MBZ's SDS (Star Diagnosis System) is their own tool that does this, and you can buy a Chinese "clone" for under $500 for a turnkey system. There are also some other 3rd party tools like the Autel M8022 Elite and two iCarsoft models (i980 and MBII) that will read MBZ's codes.

Without the MBZ-specific DTCs, you'll be swapping parts and hoping you eventually swap the right one.

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post #5 of 5 (permalink) Old 04-10-2019, 12:09 PM
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If you are referring to changing the 'accelerator pedal sensor' (B37) - following my WIS it doesn't look too difficult, but I have not done this myself.
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