DTC Removal Service
Removing certain DTCs (Data Trouble Codes or Diagnostic Trouble Codes) are OBD2 codes that inform the driver there is an issue with the car and guide the mechanic to discovering what the issue is and how to resolve it
- Is It Safe to Remove a DTC
- What the DTC Means
- What Happens When a DTC Is Removed
- DTC ( Diagnostic Trouble Codes )
Is It Safe to Remove a DTC
Every DTC is designed to let you know there is an issue in the system and something needs to be done to fix it. However, in some cases, DTCs trigger dashboard lights even though nothing is wrong in reality.
Tuning is one of the most common examples of this. For example, installing an aftermarket catless downpipe will cause a dashboard light and a DTC. The same will happen if you remove your swirl flaps.
These examples, and many more, should let you know why removing DTCs is sometimes both safe and necessary.
It is important to point out that turning off a DTC for codes such as these does not mean you completely disable the dashboard light. You need it to inform you of any other potential issues in the future. The only features that are removed are the ones that are safe and necessary to remove after tuning.
What the DTC Means
There are standard DTCs and manufacturer-specific DTCs. The former are the same for all manufacturers and they are easily recognizable. The latter are special, related to a specific manufacturer and model.
The first character of a DTC shows you what family the DCT belongs to. The options are as follows:
– P for powertrain
– C for chassis (including ABS)
– B for body (including airbags and airconditioning)
– U for user network
After this, there is usually a number, most commonly 0 or 1. If there is a 0, then it is a standard, generic fault that applies to all manufacturers. If there is 1, it is a manufacturer-specific fault.
The number that follows shows the family of the specific DTC. The list is as follows:
– 1 is for fuel and air metering
– 2 is reserved for injector circuit malfunctions
– 3 is for the ignition system or misfire
– 4 is for auxiliary emissions control
– 5 is for idle control system and vehicle speed control
– 6 is for computer and auxiliary outputs
– 7, 8 and 9 are related to transmission
– A, B and C are for hybrid propulsion systems
What Happens When a DTC Is Removed
The best way to remove a DTC when tuning a vehicle is to remap the ECU data to permanently disable the specific code. The removed DTC should be related to the aspect that is no longer relevant to that vehicle – for example, if you remove the DPF, removing the code that shows an issue with the DPF is completely safe.
Moreover, in the case of some specific errors, they will not only show up on your dashboard, but they will also be the reason why the vehicle enters limp home mode.
If your DTC is removed by a professional and if the removed DTC is related to a specific issue caused by the removal of the part, or an exchange for a suitable aftermarket one, this DTC delete should be completely safe for your vehicle.