Western Star GHG21 Error Code Cleaner – Fast and Safe DTC Removal for Western Star Trucks The Western Star GHG21 Error Code Cleaner is a reliable, easy-to-use diagnostic tool designed to clear error codes (DTCs) quickly and safely in Western Star GHG21 model vehicles. This plug-and-play device connects directly to the OBD port and requires no software or technical expertise. By removing active or passive error codes, the device helps restore the vehicle’s optimal performance, eliminating unnecessary dashboard warnings and avoiding costly service visits. Tailored for Western Star Trucks with GHG21 Emission Systems The GHG21 DTC Error Code Cleaner is specially developed to target passive fault codes that remain stored in the vehicle’s ECU even after the original issue has been resolved. These codes may still trigger warning lights or limit engine performance. Common Fault Codes Cleared by the Western Star GHG21 DTC Cleaner: SPN 5246 FMI 0 – Diesel Particulate Filter (DPF) Regeneration Required SPN 2631 FMI 7 – EGR Temperature Sensor Fault SPN 2791 FMI 3 – Low AdBlue Injection Pressure SPN 157 FMI 18 – Low Engine Oil Pressure SPN 132 FMI 2 – Turbocharger Boost Pressure Signal Error Clearing these codes allows vehicle systems to reset and operate as intended, helping to avoid performance limitations or forced derates. Supported Vehicle Systems: The Western Star GHG21 Error Code Cleaner supports clearing DTCs from the following systems: Brake System Engine Control System (ECU) Vehicle Central Computer (GM) Automatic Transmission Tachograph System Retarder System Suspension System AdBlue / SCR Emission System How to Use the Western Star GHG21 Error Code Cleaner This device is designed for simplicity and efficiency. Follow these steps: Ignition On – Turn the ignition key to the ON position (do not start the engine). Connect the Device – Insert the DTC Cleaner into the vehicle’s OBD port. Wait 30 Seconds – Let the device initialize and communicate with the system. Ignition Off – Switch off the ignition. Remove the Device – Unplug the tool from the OBD port. Wait Another 30 Seconds – Allow the ECU to reset. Start the Engine – The error codes should now be cleared. ? If a code persists, repeat the process or replace the faulty component before retrying. Extra Functionality: Clear Torque and Speed Limitations After resolving the root cause of an exhaust after-treatment system fault, this device can disable torque and speed derating, helping the truck return to full operating performance. Key Features Benefits: Clears passive DTCs from major vehicle systems Supports all Western Star GHG21 models Plug-and-play functionality – no tools or software required Saves time, reduces downtime, and avoids costly repairs Helps disable derate modes after system repairs Compact and durable design – ideal for fleets and repair shops Attention! Using an AdBlue removal emulator is illegal, particularly in EU countries. The use of this device leads to increased exhaust gas emissions. Once you install and use an AdBlue removal emulator, your truck no longer complies with Euro 4, Euro 5, or Euro 6 emission standards. Our device is intended only for use in countries where Euro 4/5/6 environmental regulations are not enforced. The AdBlue removal emulator disables the flow of DEF (Diesel Exhaust Fluid) within the SCR system. Purchasing and using this device is a personal decision. Our company is not responsible for any legal consequences that may arise from this choice. Delivery times provided are estimates. Actual delivery times may vary due to carrier-related delays. We ship items as quickly as possible, but in some circumstances, it can take up to three business days for an item to be shipped. Once an item leaves our hand, we have no control over when it gets delivered. We only ship to the confirmed shipping address provided to us at the time of purchase. We cannot change the delivery address after a purchase has been made, so please ensure that your shipping address is correct. Please note that customs clearance may incur additional charges, which are the responsibility of the buyer.