Actros Gs Fault Codes List

[Eleanor Heidecker]

GSfault codes in Mercedes-Benz vehicles detect if there are any malfunctions related to the gear shift. Usually, such issues are related to the power or voltage supply for the joystick, sensor malfunctions, clutch displacement, or cable switch.

Mercedes builds some of the most advanced vehicles on the road. To keep everything running smoothly, Mercedes' onboard computers monitor hundreds of individual systems, sensors and variables and make corrections as necessary to optimize performance, shifting, braking, traction, stability, safety and other vehicle parameters. When anything goes wrong, your Mercedes registers the error or deviation and produces a fault code.

You should always take these warning lights on your dash seriously and immediately bring your car or sprinter to a Mercedes specialist repair shop such as Burdi Motorworks here in Chicago whenever a warning light comes on. In some cases, there might be a simple fix (such as correcting a low fluid level, tightening your gas cap or cleaning a sensor), while in other cases your Mercedes may require additional service or repairs.

Thanks to the error codes recorded by your onboard computer, our trained technicians can quickly determine what is wrong. When you bring your vehicle to us, we start by hooking our diagnostic equipment up to your ODB-II port and reading all registered error codes. While all automakers use a common language for error codes, each one has specific definitions.

That's where our experience with Mercedes Benz vehicles and our advanced diagnostics equipment is critical. Our experienced technicians can read all of your error codes (both current and previous) and plan the necessary service to get your Mercedes running perfectly again. We can also reset error codes and see if they come on again, which can be a sign that a temporary problem has been fixed (such as low oil, bad gas or dirty sensors) or that a problem is intermittent and appears again after a short time.

All of this error code information points us to the root cause of your Mercedes issues and guides us to the right repairs. We only do what is necessary and always get your approval before starting service. This is how we've built our reputation as a leader in Mercedes Benz maintenance, repair and service in the Chicago area. We invite you to visit our facility in Schiller Park to talk to us in person. You can also contact us online or by phone to schedule a service appointment.

Our experienced team will do what it takes to get your Mercedes or Sprinter back where it belongs: on the road! We've listed all of the Mercedes fault codes and their explanations to help you understand what's going on with your vehicle if you have your own scanner and want to learn more about Mercedes fault codes.

This document provides a list of fault codes for various vehicle systems that may be detected by the ADM3 control unit. It includes over 200 fault codes covering areas like engine sensors, transmission, brakes, and more. Each fault code includes the location of the fault, a description, suggested remedial actions, and other relevant details to assist with troubleshooting and repair. Fault codes are organized by number, J1939 identifier, and other identifying information. The list aims to help technicians diagnose issues by pointing them to the appropriate fault code.Read less

Developed by subject matter experts at Diesel Laptops, our fault code repair guides are painstakingly accurate and up-to-date. They feature a consistent layout and easy-to-use instructions across all manufacturers. Engines, transmissions, anti-lock brake systems, and more!

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Just scanned my vehicle for the first time to check out the code for a Check Engine Light. I grew curious if these fault codes get logged somewhere with a date and time stamp of some kind at the time they were thrown. I'm imagining some design similar to the Event Log used in computer operating systems but I may be totally mistaken on this one.

What exactly is the design around these fault codes as far as how they're recorded. One obvious aspect of the design is the use of unique codes specific to some particular problem. Is that the full story with a fault, are there any other metadata surrounding a fault instance that can be looked up? How do fault histories work in vehicles? Are histories even recorded or are faults simply a binary thing, either on currently or off currently regardless of whether they were ever on at any point in the vehicle's life. I know you can clear codes using scanner tools, is this to suggest that faults would stay flagged on a system in perpetuity until you manually clear them? This would lead me to believe that the check engine light would remain illuminated even after repairing the root cause of a fault. Is this accurate?

However, in most cases, a Diagnostic Trouble Code (DTC) is logged with a freeze frame, which is a complete store of all Parameter ID's (PIDS). These parameters cover everything from RPM, vehicle speed, O2 sensor data, mass airflow data, long and short term fuel trims, ignition advance, intake and coolant temperature, and perhaps dozens more. These are accessed via OBD2 Mode 2. The simple "Pxxxx" DTC faults are accessed via OBD2 Mode 3, which is often the extent that simple consumer scan tools are able to display.

The history of such codes again varies with the implementation of OBD2, and quite likely how new the vehicle. On my 1997 Subaru, data is limited -- given that OBD2 wasn't a mandate until the 1996 model year.

However, all vehicles have two categories of DTC: "Pending", which is a detected fault, but doesn't set the Check Engine Light (CEL, SES) until the condition is detected again a certain number of times. (This is accessed through OBD2 Mode 7.) The number of "drive cycles" required to promote a "pending" to a CEL depends on the fault, the implementation, and the vehicle.

In addition, some Engine Control Units/Modules (ECU/ECM) have the capability of logging a few or dozens of "historical" fault codes, regardless if they have been repaired and/or cleared. This provides background to an astute technician, even when there is no current pending or logged DTC faults.

DTC codes do NOT have to be cleared "manually". If the condition that caused the fault is repaired, or simply no longer occurring (P0420 catalyst efficiency a classic example) the code will "clear itself" so to speak after a certain number of drive cycles without the fault reoccurring. The number of drive cycles required to clear an active CEL DTC depends on the fault and software implementation. In most cases, however, a technician clears these codes after a valid repair to assure the customer that the repair is complete. But we don't HAVE to; it's a courtesy. The ECU/ECM constantly monitors the PID and emission conditions, and will eventually relent, given enough "clean" drive cycles.

As an aside, there is a category of DTC that cause a FLASHING CEL. These differ dramatically from the "solid on" CEL, in that if it comes on and stays on, it's an indication that something is wrong, and the driver should seek service at a convenient opportunity. However, a FLASHING CEL indicates something severely wrong that could cause vehicle damage. Usually, this is indication of an overly rich condition, usually caused by severe ignition faults or fuel injection that if left alone could damage an expensive catalytic converter. These "flashing" check engine lights should be addressed immediately -- some OEMs suggesting pull the vehicle over and have it towed.

To further complicate this process, clearing a CEL gets rid of the fault code from the "active" category, but like your computer analogy, it's an ALT_CTRL-DEL. It completely resets the ECU/ECM, and clears out what is referred to as the "monitors".

The monitors are a whole plethora of tests which run either continuously, or in most cases when certain PID (temperature, engine load, fuel level, drive cycle) criteria are met. (This is what makes it particularly difficult to pass evaporative emission system monitors; the criteria are exact and even depend on how much fuel in in the tank.)

It takes a certain number of successful drive cycles, obeying all the requisite criteria, to "pass" these monitor tests. At this point the vehicle can pass an OBD2 emissions inspection -- when all monitors have passed. (In New York, vehicles produced prior to 2001 can have two incomplete monitor tests, 2001 and newer are allowed one, and it may be that recent vehicles are allowed none incomplete. This is just trivia.)

The upshot is that while a vehicle may have had proper repairs and the fault codes cleared, this does NOT mean it will pass an OBD2 emissions inspection. This prevents the shadetree technique of disconnecting the battery and taking it immediately to inspection. The vehicle must complete the requisite number of drive cycles with all (or most) criteria met in order to get the passing grade. While a so-called "not ready" vehicle doesn't fail emissions testing, it also doesn't pass. After the ALT-CTRL-DEL ECU/ECM lobotomy, the vehicle settles in and doesn't become "ready" for inspection until it proves to itself that all monitors are go, and the vehicle is running clean.

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