Honda DTC Off Service by File

Support List
Honda Continental MPC5554 2MB
Honda Keihin SH7058 1MB(AutoDTC supports all DTCs.,30 points include two fault codes; each additional fault code requires 10 points.)
Honda Keihin SH72543 2MB
Honda Keihin SH72546 3.75MB
Honda Keihin MPC5554 2MB
Honda Keihin MPC5566 3MB
Honda Keihin TC1782 2.5MB
Honda Keihin TC275 4MB
Honda Hitachi SH7058 1MB
Honda Hitachi SH7059 1.5MB
Honda Hitachi SH72543 2MB
Honda Hitachi MPC5554 2MB
Honda Matsushita SH7055 512KB
Honda Matsushita SH72543 2MB
Available Services
Honda DTC OFF
O2 Sensor Monitoring Disabled (O2 OFF)
Catalyst Monitoring (CAT OFF)
Secondary Air Injection System Monitoring (SAI OFF)
Evaporative Emission Control System Monitoring (EVAP OFF)
Exhaust Gas Recirculation (EGR) Monitoring – Disabled (EGR OFF)
Engine Speed Limitation Disabled (Nmax OFF)
Vehicle Speed Limitation Disabled (Vmax OFF)
Immobilizer System – Disabled (IMMO OFF)
Disable Specific Errors and Systems
Disable Diagnostic Trouble Code P0843 – Clutch Pedal Pressure Switch
Disable Diagnostic Trouble Code P2227 (MAP Sensor)
EVAP System Leak Detection DTCs – Disabled (P0451, P0454, P0455)
Disable Diagnostic Trouble Codes P0420, P0430, etc. – Oxygen Sensor Related
Disable Diagnostic Trouble Codes P0498, P0499 – EVAP VSV Fault
Disable Diagnostic Trouble Code P0128 – Coolant Temperature Related
Disable Diagnostic Trouble Codes P0200, P0205 – Injector Circuit
Disable Diagnostic Trouble Code P0400 – Exhaust Gas Recirculation Related
Disable Diagnostic Trouble Code P0110 – Intake Air Temperature Sensor
Disable Diagnostic Trouble Code P2279 – Intake/Exhaust Temperature Related
Disable Diagnostic Trouble Codes P1127, P1128 – Cruise Control Related
Disable Fuel Evaporation (EVAP) System Fault Monitoring
Disable Electronic Stability Control (VTC)
※ The items listed above are examples. Please substitute with your actual DTC codes as needed.

User Guide
Please make sure the vehicle model and ECU type are fully compatible before use.
Before writing data, be sure to back up the original ORI file.
All operations must be carried out under stable power supply and in a professional environment.
For remote technical support, please contact after-sales service and provide the ORI/MOD file name.

A Honda DTC Off Service by File is a professional ECU (Engine Control Unit) tuning solution where specific Diagnostic Trouble Codes (DTCs) are permanently disabled within a vehicle’s software. Instead of just clearing a code temporarily with a scanner, this service modifies the ECU firmware to prevent the system from ever monitoring or reporting that specific error.

Key Features of the Service
Custom File Modification: You upload your vehicle’s original ECU file to a provider (like MyChiptuningfiles or TuningBot), who then edits the “error mask” to suppress specific P-codes.
Permanent Removal: The targeted fault codes are deleted at the software level, meaning the Check Engine Light (MIL) will not turn on for those specific issues, and the car will not enter “limp mode” because of them.
Selective Disabling: Only the requested codes are removed, leaving other critical engine safety and diagnostic functions fully operational.

Common Use Cases
This service is typically used for vehicles modified for off-road, motorsport, or industrial use where certain factory components have been removed:

Emissions Deletes: Removing codes triggered by deactivating the EGR (Exhaust Gas Recirculation), DPF (Diesel Particulate Filter), or Catalytic Converter.
Sensor Issues: Disabling codes for faulty or disconnected sensors (e.g., NOx, O2, or swirl actuators) that do not affect core engine performance.
“Ghost Codes”: Eliminating recurring error codes that persist even after the underlying mechanical issue has been addressed.

Important Considerations
Legal Restrictions: Disabling emissions-related DTCs is often illegal for street-legal vehicles and may cause the car to fail emissions inspections.
Hardware Required: To use this service, you need specialized tools (like Alientech or Swiftec) to “read” the file from your Honda’s ECU and “write” the modified file back to it.
Not a Repair: Removing a DTC does not fix the physical fault; it only stops the car from reporting it.

Do you need help finding a specific service provider or identifying which ECU model your Honda uses for this process?