Does it come with a power supply?

No. And it doesn't require a separate power supply. It gets both power and diagnostics directly from your truck's OBD port. You can temporarily use a 12V adapte or Type-c cable (not included) to power on, but this will NOT enable vehicle diagnostics.

Can it do DPF regen on all engines?

It supports DPF regen on major engines like Cummins, Paccar, Caterpillar, Detroit, Volvo, Mack, International/Maxxforce, Isuzu, Fuso, and Hino. Some newer Freightliner trucks with Detroit engines use the UDS protocol, which is not supported.

Is this a bidirectional tool?

It reads/clears codes, runs DPF regen, Oil Reset and shows live data—but it does not support coding or parameter programming.

Do I need Wi-Fi to use it?

Only for the first-time setup and updates. Once activated, it works offline with no Wi-Fi needed.

What if it shows ECU error or won't connect?

Please check ignition, cable connection, and vehicle compatibility. For further assistance, use Amazon’s message system to find us

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🚛 Diagnose Like a Pro, Drive Like a Boss!

PLUG PLAY SIMPLICITY - Out-of-the-box ready with intuitive interface and dual-language support (English/Spanish) for seamless diagnostics.
ROBUST PROTOCOL SUPPORT - Covers OBDII, J1587, J1939, J1708, and the latest J27145 protocols—future-proof your diagnostic toolkit.
DPF REGEN RESET MASTERY - Effortlessly perform Diesel Particulate Filter regeneration and resets to keep your trucks emission-compliant and running clean.
LIFETIME UPDATES INCLUDED - Stay ahead with free, automatic WiFi updates ensuring your scanner evolves with the latest vehicle tech.
UNMATCHED ENGINE COVERAGE - Supports Cummins, Detroit, Caterpillar, Paccar & more with 98% compatibility—never miss a beat on your fleet.

The ANCEL HD3400 Pro is a professional-grade heavy-duty truck diagnostic scanner designed for top American diesel engines including Cummins, Detroit, Caterpillar, and Paccar. It offers comprehensive engine system diagnostics, DPF regeneration/reset, and supports multiple OBD and diesel protocols. Featuring a 5-inch LCD, dual-language interface, and free lifetime updates via WiFi, it empowers fleet managers and technicians to maintain peak vehicle performance with ease and confidence.

Reviews

T**S

I should of bought it sooner

This thing works great. It won't do everything a mechanic's does. But it does a lot. Wish I bought it sooner

8.02.2024

M**

Acheté pour mon frère

J’ai acheté ça pour mon frère il a une entreprise de transport il m’a dit ça marche parfaitement

2.01.2024

M**L

T-680 PACCAR

Love this, gives me the code and fault so I know what I'm talking about before I go into the dealership for repair. Also allows me to clear most codes if I choose to do so. Haven't had to try a forced regen and I don't believe it will do this but overall I am very pleased with this unit.

31.01.2024

E**D

Nice unit for the price

I have used it on a cummins, a detroit, and a d13 volvo. Worked amazing on the Detroit and cummins Very indepth engine scan. With with dealer quality info. Volvo is more a generic code version. But work well.it scans the allison transmissions, aswell as abs on the big 4 brand very well. Again mack and volvo more generic.great little unit for the money

2.10.2023

M**E

Works

Works as advertised,bought it mainly for forced regeneration

2.11.2023

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₨21865

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TrustScore 4.5 | 7,300+ reviews

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Manufacturer	ANCEL
Brand	ANCEL
Model	HD3400 truck scanner
Product Dimensions	19.2 x 11.81 x 4.8 cm; 1.54 kg
Item model number	HD3400
Manufacturer part number	HD3400
Special Features	Extendable, Memory, Power Folding
Item Weight	1.54 kg

ANCEL HD3400 Pro Full System Heavy Duty Truck Scanner - DPF Regen, Free Lifetime Updates - 98% Compatibility - Diesel Diagnostic Scan Tool for Cummins, Detroit, Caterpillar, Paccar & More

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