SL/R129: Resistance too low
Thread Starter
Junior Member
Joined: Sep 2021
Posts: 59
Likes: 2
From: Ann Arbor Michigan
1996 sl 500
Resistance too low
I have a 96 SL500. Car runs fine. Any help figuring out what the following means? Thanks in advance.
However, after running a code reader, I am getting the following under TCM - Transmission Control Module
120 Resistance Too low. (the accelerator pedal value of the engine system is sporadically implausible) or (the front right wheel speed of the traction system is sporadically implausible)
121 Plus, engine system is sporadically implausible or the front left wheel speed of the traction system is sporadically implausible
Plus, 118 resistance too low - the right rear wheel speed is sporadically implausible - 119 Same with rear left.
However, after running a code reader, I am getting the following under TCM - Transmission Control Module
120 Resistance Too low. (the accelerator pedal value of the engine system is sporadically implausible) or (the front right wheel speed of the traction system is sporadically implausible)
121 Plus, engine system is sporadically implausible or the front left wheel speed of the traction system is sporadically implausible
Plus, 118 resistance too low - the right rear wheel speed is sporadically implausible - 119 Same with rear left.
Super Member
Joined: Jul 2016
Posts: 699
Likes: 128
From: NE OHIO
1998 SL500,2011 GL550,2009 ML350,past 1995 E320 Cabrio ,2005 ML500,2006 ML500,1996 SL500,1972 280SEL
pictures of codes
I have a 96 SL500. Car runs fine. Any help figuring out what the following means? Thanks in advance.
However, after running a code reader, I am getting the following under TCM - Transmission Control Module
120 Resistance Too low. (the accelerator pedal value of the engine system is sporadically implausible) or (the front right wheel speed of the traction system is sporadically implausible)
121 Plus, engine system is sporadically implausible or the front left wheel speed of the traction system is sporadically implausible
Plus, 118 resistance too low - the right rear wheel speed is sporadically implausible - 119 Same with rear left.
However, after running a code reader, I am getting the following under TCM - Transmission Control Module
120 Resistance Too low. (the accelerator pedal value of the engine system is sporadically implausible) or (the front right wheel speed of the traction system is sporadically implausible)
121 Plus, engine system is sporadically implausible or the front left wheel speed of the traction system is sporadically implausible
Plus, 118 resistance too low - the right rear wheel speed is sporadically implausible - 119 Same with rear left.
What dash lights are on?
Super Member
Joined: Jul 2016
Posts: 699
Likes: 128
From: NE OHIO
1998 SL500,2011 GL550,2009 ML350,past 1995 E320 Cabrio ,2005 ML500,2006 ML500,1996 SL500,1972 280SEL
dash lights
Last edited by vesiadog; Jun 10, 2024 at 04:54 PM. Reason: wording
MBWorld Fanatic!
Joined: Sep 2018
Posts: 3,228
Likes: 927
From: New Orleans Area
2015 E400 Sedan
This is first year for ODBII
So code should start P0XXX and they are fixed by the ODBII specs
118 & 119 are coolant sensors issues
P0118 Mercedes-Benz Code Meaning, Causes, Symptoms, & Tech Notes (engine-codes.com)
P0119 Mercedes-Benz Code Meaning, Causes, Symptoms, & Tech Notes (engine-codes.com)
120 121 are throttle position Sensor
P0120 Mercedes-Benz Code Meaning, Causes, Symptoms, & Tech Notes (engine-codes.com)
P0121 Mercedes-Benz Code Meaning, Causes, Symptoms, & Tech Notes (engine-codes.com)
Now if they start with a different letter it means different things.
So code should start P0XXX and they are fixed by the ODBII specs
118 & 119 are coolant sensors issues
P0118 Mercedes-Benz Code Meaning, Causes, Symptoms, & Tech Notes (engine-codes.com)
P0119 Mercedes-Benz Code Meaning, Causes, Symptoms, & Tech Notes (engine-codes.com)
120 121 are throttle position Sensor
P0120 Mercedes-Benz Code Meaning, Causes, Symptoms, & Tech Notes (engine-codes.com)
P0121 Mercedes-Benz Code Meaning, Causes, Symptoms, & Tech Notes (engine-codes.com)
Now if they start with a different letter it means different things.
