GKR-03002 MAN Truck Fault Code

When you encounter GKR-03002 error code in your MAN vehicle please check this page at the beginning.

Meaning Of GKR-03002

GKR-03002 code shows us there is a problem in zdr module. zdr module refers to Intermediate speed control. There is a problem in Intermediate speed control External temperature sensor of air.

How to read truck fault codes ?

Truck engine codes, also known as diagnostic trouble codes (DTCs), are used to identify and diagnose issues with a truck's engine. These codes can be read using a diagnostic scanner that is plugged into the truck's onboard diagnostics (OBD) port.

Here are the steps to read truck engine codes:

1. Locate the OBD port: This is typically located under the dashboard on the driver's side of the truck, but the location may vary depending on the make and model of the truck.
2. Connect the diagnostic scanner: Plug the scanner into the OBD port, following the manufacturer's instructions.
3. Turn on the ignition: Make sure the truck is in the "on" position, but do not start the engine.
4. Read the codes: Use the scanner's menu to access the "read codes" or "diagnostics" function. The scanner will display any codes that are stored in the truck's computer.
5. Interpret the codes: Each code consists of a series of letters and numbers. The first letter indicates the system that is affected (e.g. P for powertrain, B for body, etc.). The remaining digits indicate the specific issue. The codes can be looked up in the truck's service manual or online to understand the problem.
6. Clear the codes: Once the codes have been read, it is a good practice to clear them from the truck's computer. This can be done using the scanner's "clear codes" or "reset" function.

It's important to note that this is a general guide, and the exact process of reading engine codes may vary depending on the make and model of the truck and the diagnostic scanner being used.