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ANCEL HD120 Heavy Duty Truck Scanner Bluetooth DPF Regen Tool for Volvo & Intl
HD120 Heavy Duty Truck Scanner – Detailed Technical Explanation of Common Issues
The HD120 Bluetooth Heavy Duty Truck Scanner is designed to deliver reliable diagnostics for a wide range of heavy-duty vehicles. While the device supports advanced features such as fault code reading, DPF regeneration, and communication with various ECUs, some users may encounter limitations during usage. Below is a comprehensive explanation of three commonly reported issues, why they occur, and how users can effectively address them.
1. Error Codes Cannot Be Cleared
If you're unable to clear error codes from your truck using the HD120 scanner, it's important to understand that this behavior is often caused by how modern truck ECUs manage fault data. The scanner is functioning correctly, but the system may restrict code clearance under specific conditions.
Possible Causes:
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Unresolved Faults: Active fault codes cannot be cleared unless the underlying issue has been resolved. For instance, a failed sensor, wiring fault, or defective component must be replaced or repaired before the ECU allows the code to be erased.
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Historical or Permanent Codes: Some codes, especially those stored for record-keeping (historical or permanent codes), are retained by the ECU even after the issue is fixed. These cannot be cleared manually in many vehicle models and are cleared only after multiple successful drive cycles.
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Aftertreatment System Codes: Faults related to emission systems such as the Diesel Particulate Filter (DPF), Selective Catalytic Reduction (SCR), or Diesel Exhaust Fluid (DEF) systems may require specific vehicle operation conditions to be met before they disappear. Simply clearing the code does not immediately reset the system.
Resolution:
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Repair all active issues associated with the fault code.
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Drive or idle the vehicle according to manufacturer-recommended cycles for aftertreatment codes to clear automatically.
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Retry code clearance once the fault conditions are resolved and confirmed.
2. DPF Forced Regeneration Not Performing or Unavailable
The HD120 supports DPF forced regeneration only on specific engine types and under particular operating conditions. If regeneration cannot be initiated, it does not necessarily mean the scanner is defective. Instead, it’s usually due to system requirements or compatibility limitations.
Important Conditions:
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DPF System Presence: Not all trucks are equipped with a Diesel Particulate Filter system. Verify that your vehicle actually has a DPF before attempting this function.
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Supported Engine Types: The HD120 currently supports DPF regeneration on engines such as:
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Volvo
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Maxxforce
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International A26
If your truck has a different engine, regeneration may not be supported.
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Preconditions Must Be Met: Even on supported engines, the truck must meet specific conditions to initiate forced regeneration. These may include:
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Minimum coolant temperature
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Adequate fuel level
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Vehicle in park or neutral
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No active critical fault codes
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Failed Regen Attempts: If the function fails despite meeting all conditions, further investigation may be needed. Using the Diesel OBD function, users can retrieve the Engine ID (ECU ID) to assist technical support in verifying compatibility or identifying firmware limitations.
Resolution:
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Confirm DPF system is installed.
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Check engine type for compatibility.
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Ensure all operating conditions are met before retrying regeneration.
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Collect engine ECU ID via the Diesel OBD menu and provide it to support if regen continues to fail.
3. Communication Error with Engine ECU
If the scanner cannot establish communication with the Engine Control Unit (ECU), it may be due to issues with the vehicle’s network, the physical connection, or Bluetooth settings.
Troubleshooting Steps:
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Truck Network Integrity: Ensure the truck’s data bus (CAN, J1939, J1708, etc.) is functioning correctly. Communication faults may originate from damaged wiring, corroded connectors, or failed control modules.
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Secure Physical Connection: Check that the HD120 scanner is firmly connected to the diagnostic port. A loose connection can prevent successful communication.
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Bluetooth Setup: Verify that the scanner is properly paired with your phone and that the official app is installed and running. Close other diagnostic apps that may interfere with communication.
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Restart Procedures: After a failed connection attempt, follow these steps:
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Turn off the truck’s ignition completely.
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Wait for 2–3 minutes to reset all modules.
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Power the vehicle back on and retry the connection.
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Resolution:
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Ensure all cables and ports are clean, secure, and undamaged.
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Restart the system and attempt to connect again using the correct app and settings.
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If issues persist, try connecting the HD120 to a different vehicle to determine if the problem lies with the truck or the scanner.
ANCEL HD120 diesel scanner diagnostic tool and obd2 code reader is suitable for performing comprehensive system health diagnostics on all pickup trucks, light trucks, semi-trucks, medium-duty diesel vehicles, or heavy equipment that comply with the HDOBD protocol.it can also provide all OBD2 functions for gasoline and diesel cars manufactured from 1996 and newer.ANCEL HD120 allows you to easily access and view the readings from your smartphone.This will save you a lot of time and money by allowing you to cut out the guess work and fix problems before they become a big issue.
🚛Bluetooth Diesel Diagnostic Tool & OBD2 Scanner
ANCEL HD120 is an unique wireless OBD scanner for diesel trucks and gasoline vehicles. It provides all system diagnostics for all semi, light and heavy equipment that comply with the HDOBD sprotocols. With its precise and fast fault detection capabilities, it eliminates the need for guesswork when troubleshooting truck issues. It can also function as a complete OBD2 scanner for cars and pickups , allows you to check and clear engine faults.
🔥Easy to install & Use,Lifetime Software Update
Simply download the Ancel Trucker app from the App Store or Google Play and follow the guided steps to log in. The user-friendly interface allows you to easily access and view readings on your iOS or Android smartphone, providing you with accurate and reliable diagnostic information at an OEM level. Note:for accurate Bluetooth pairing, it is recommended to enable location services on your phone. (Without any hidden fees.)
👍Powerful D-P-F Regeneration & Reset for International & Volvo
Supports exclusive OEM-level regeneration and reset functions for International and Volvo trucks, helping you achieve better MPG, throttle response, understand the level of filter blockage and total usage time, longer unit life, shorter downtime, and more frequent regeneration (passive), and save inspection records. Saves you hundreds or even thousands of dollars in repair costs.
👍All System Diagnostics for Trucks
ANCEL HD120 diesel scan tool supports full system diagnostics for truck engines, transmissions, ABS, chassis, etc. It works for Freightliner, International, Kenworth, Mack, Mercedes Truck, Peterbilt, Sterling, Western Star, Volvo, BobCat, Case, Caterpillar, John Deere, Komatsu, Terex and also compatible with engines and transmissions from Cummins, Caterpillar, Detroit, Paccar, Allison, Bendix, Eaton, Wabco, ZF and more.
🚍Compact & Easy to Carry or Store
With its compact design weighing only 8 ounces, the HD120 is equipped with commonly used 16-pin and 9-pin interfaces. You won't need to worry about additional screens or heavy cables, and it allows you to carry it with you or store it in your toolbox, always ready to be used whenever you need it.
✅With 9 Pin Port Locking Function & Wifi Connection
This feature ensures a more stable interface connection and the HD120 truck scanner also added WiFi connectivity (Bluetooth as default connection) to enhance the software interface and functionality. It will continue to grow through regular upgrades, with lifetime free updates and a 3-year warranty.
ANCEL TRUCKER
Download ANCEL TRUCKER in the App Store or Google Play
Lifetime Free Updates
Money Saving and enhance functionality and reliability continuously.
Idle Speed Adjustment
Optimize your engine’s idle RPM to enhance performance and improve fuel efficiency—ideal for maintenance or tuning needs.
🚚 Diesel Heavy-Duty Truck Systems Coverage
This diagnostic tool supports an extensive range of systems found in diesel HD trucks, making it ideal for commercial vehicle maintenance:
🔧 Supported Systems Include:
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Engine System
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Body Control System
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SRS – Airbag System
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ABS – Anti-Lock Brake System
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Instrument Cluster System
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Transmission System
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Brake Control System
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Unit Pump System
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Common Rail System
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Electronic Control System
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Natural Gas System
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Tail Gas After-Treatment System
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Air Conditioning System
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ATA – Anti-Theft Alarm System
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AHA – Auxiliary Heating (Air-to-Air)
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AUS – Audio System
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BMS – Brake Management System
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Bosch DENOX (AdBlue) System
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Brake Control System
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BWS – Preparation System
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CCS – Climate Control System
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Comfort/Assistance/Safety Systems
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Compressed Air Reserve System
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CSS – Collision Safety System
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CTS – Clock and Time System
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EBS – Electronic Brake System
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EHLA – Electrohydraulic Steering
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EMS – Engine Management System
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Fuel System
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Exhaust Pressure Adjustment System
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ECM – Engine Control Module
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Speed Control Systems
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Turbo Control Systems
... and more.
D.P.F Regeneration ( Fit for Volvo & International ）
D.P.F Regeneration is used to clear PM (Particulate Matter) from the D.P.F filter through continuous combustion oxidation mode (such us high temperature heating conbustion, fuel additive or catalyst reduce PM ignition conbustion) to stabilize the filter perfornance. An unmaintained D.P.F runs your vehicles unnecessarily hard and less efficient. With regular D.P.F maintenance, you can save lots of dollars and time by getting your D.P.F cleaned, restore your D.P.F to nearly new! Increased Fuel Economy up to 5%. Avoid costly replacement of the filters. Lower Overall Maintenance Costs.
D.P.F regeneration may be performed in the following cases:
(a) The exhaust back pressure sensor is replaced.
(b) The PM trap is removed or replaced.
(c) The fuel additive nozzle is removed or replaced.
(d) The cataytic oxidizer is removed or replaced.
(e) The D.P.F regeneration MIL is on and maintenance is performed.
(f) The D.P.F regeneration control module is replaced.
ANCEL HD120 Truck & Car Diagnostic Scanner – All-in-One Heavy-Duty Code Reader
The ANCEL HD120 is a powerful and portable diagnostic tool designed for both 12V OBD2-compatible vehicles and 24V diesel trucks. With built-in 9-pin and 16-pin connectors, it offers seamless support for passenger cars, light trucks, and heavy-duty vehicles—no adapters needed!
🔧 OBD2 Automotive Functions (For Cars & Light Trucks)
This device supports full OBD2 diagnostics and includes all 10 essential test modes:
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✅ Read and Clear Diagnostic Trouble Codes (DTCs)
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✅ View Real-Time Live Data and Data Streams
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✅ Read Freeze Frame Data (Snapshot at Error Time)
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✅ I/M Readiness Check for Emissions/Smog Test
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✅ On-Board Monitor Test (Mode 6)
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✅ O2 Sensor Monitoring
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✅ Component Activation Test
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✅ Retrieve Vehicle Information (VIN, CIN, CVN)
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✅ Driving Cycle Test
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✅ Built-In DTC Lookup Library
Dual Interface Design: 9-Pin & 16-Pin Integrated
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The 9-pin interface connects directly to heavy-duty trucks (J1939/J1708 protocols).
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The 16-pin OBD2 interface supports standard cars and light-duty vehicles.
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No additional accessories or bulky adapters needed. Its all-in-one compact design makes it easy to carry—even fits in your pocket.
Vehicle Coverage
🚗 OBD2-Compatible Cars:
🇺🇸 Domestic:
Buick, Cadillac, Chevrolet, Chrysler, Dodge, Ford, GM, GMC, Lincoln, Jeep, Pontiac, Saturn
🇪🇺 European:
Audi, Bentley, BMW, Fiat, Jaguar, Land Rover, Mercedes-Benz, Mini, Porsche, SAAB, Smart, Sprinter, Volvo, VW
🇯🇵 Asian:
Acura, Daewoo, Honda, Hyundai, Infiniti, Isuzu, Kia, Lexus, Mazda, Mitsubishi, Nissan, Scion, Subaru, Suzuki, Toyota
🚐 Pickups & Vans (OBD-II Compatible):
Silverado, Coronado, Ford F150–F750, E-Series, Dodge Ram 1500–5500, GMC Sierra, Nissan Frontier, Toyota Tundra & more
🚀 Additional Features
✅ One-Click I/M Readiness
Instantly check emission status to see if your vehicle is ready for inspection or smog testing.
✅ One-Click Feedback
Encounter a diagnostic issue? Use this feature to send direct feedback. ANCEL’s technical support team will respond with tailored assistance.
✅ One-Click Lifetime Updates (Wi-Fi)
No computer needed. Connect via Wi-Fi and update the scanner directly from the device — lifetime updates included for free!
✅ Battery Voltage Monitoring
Displays real-time voltage to help monitor battery and charging system status.
✅ Print & Share Diagnostic Reports
Easily print diagnostic reports including:
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Vehicle Info
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Trouble Codes
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Live Data
Connection Modes
🔌 1. Standard OBD-II (12V Vehicles):
Use the 16-pin interface directly for diagnosing OBD2 cars. No adapters needed.
🔌 2. Diesel OBD (24V Trucks):
Use the 9-pin green interface to connect with heavy-duty vehicles. For these, you’ll need to select the “Diesel OBD” option in the menu.
Package Includes:
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1 × ANCEL HD120 Main Unit
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1 × User Manual
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1 × Packing Box
