Diagnose & Clear MaxxForce Engine DEF Codes – Also full system truck diagnostic scanner

Read & Clear DEF Diagnostic Codes on Your MaxxForce Engine

Tired of costly breakdowns and unnecessary downtime because of DEF (Diesel Exhaust Fluid) warnings, check engine lights, and derate situations in your MaxxForce? Our advanced diagnostic scan tool is engineered specifically with MaxxForce engine owners in mind, putting DEF diagnostic control right in your hands.

Just choose your MaxxForce engine model from the drop down box above when ordering.

Why Choose This Diagnostic Tool for your MaxxForce DEF Problems?

• Instant DEF Code Reading & Clearing:
  Read, interpret, and erase DEF system codes and aftertreatment warnings that can lead to derate or disable your rig. Quickly identify the root cause—whether it’s low-quality DEF, dosing, sensor issues, or other emission-related faults—and reset codes directly from your cab.

• Get Back on the Road Faster:
  Don’t wait days or pay hundreds for a shop visit just to clear a simple emissions code. Plug into your truck’s diagnostic port and clear DEF faults or check engine lights in minutes—no expertise or expensive software required.

• Comprehensive MaxxForce Compatibility:
  Compatible with your MaxxForce engine model - Just select your MaxxForce model from the above drop down boxes above when ordering.

Common Generic DEF Codes (SPNs) it can read and clear:

Quickly identify and clear trouble codes (DTC) of electronically controlled systems on your MaxxForce by simply connecting the reader to the diagnostic socket.

Engine System:

• Reads and clears fault codes for EGR, turbocharger, fuel pressure, throttle, air intake, coolant temp, oil pressure, injector balance, and more

Transmission:

• Monitors and resets codes for transmission fluid, gear shifting errors, clutch issues, and electronic controls

Brakes & ABS:

• Diagnoses air brake and electronic ABS system errors, including warning light resets and sensor signal issues

Emissions/Aftertreatment:

• support for DPF, SCR, DOC system status and faults; 

Chassis/BODY Systems:

• Diagnoses electrical, battery, lighting, trailer connection faults, and more

And more!

📊 Live Data Provided

Monitor critical MaxxForce engine and truck systems in real time, with live data to diagnose issues proactively and maintain top performance. The scan tool provides:

• Engine Speed (RPM): Instantly see how hard your engine is working.

• Coolant Temperature: Keep tabs on cooling system health to prevent overheating.

• Oil Pressure: Real-time lubrication status for optimal engine protection.

• Fuel Rate & Fuel Level: Track consumption and remaining fuel for efficiency and trip planning.

• Boost/Intake Manifold Pressure & Temperature: Assess turbocharger performance and combustion health.

• Throttle Position: Spot issues with acceleration or power delivery.

• Battery Voltage: Monitor your truck’s electrical system and prevent unwanted breakdowns.

• Transmission Gear Position & Vehicle Speed: Review operational data for diagnostic accuracy.

• Engine Hours: Schedule maintenance based on true run-time, not guesswork.

• Emissions Systems (EGR, Turbo Speed, etc.): Get direct data from aftertreatment components and emission controls.

📦 Package Includes:

1 x Diagnostic tool for your MaxxForce engine
1 x USB cable
1 x User manual
1 x 16 OBD and 9 pin connector for your MaxxForce engine
1 x Protective storage case

⭐ Why Choose Our Diagnostic Scan Tool?

Don’t wait until a DEF system or other diagnostic issues throws a fault light or shuts your MaxxForce down. Our tool gives you the power to diagnose and fix the problem immediately, keeping your MaxxForce rolling, reducing downtime and preventing costly repairs. 

Choose your MaxxForce engine model from the drop down list above and click "Add to Cart" to order.

Shipping is Fast & Free to all US states. Thousands of trucks per month rely on our tool to avoid downtime and expensive shop bills.

❓ Product Frequently Asked Questions (FAQ)

Q1: Will this tool clear my MaxxForce's DEF (Diesel Exhaust Fluid) codes and turn off the warning light?
A: Yes! If it related to the This scan tool is purpose-built to read and clear all major MaxxForce DEF/aftertreatment codes, including tank temperature, level, dosing, quality sensors, and more (SPN 3031, 3250–3259, and many others, see table above). Once you’ve fixed the problem, plug in the tool and clear the code—your warning light will go out immediately in most cases.

Note: this scanner can read and clear the DEF codes listed in our compatibility table above for your truck. However, for any other DEF codes a proprietary dealer diagnostic system may be required.

Q2: What MaxxForce models will this diagnostic tool work with?
A: It’s compatible with all MaxxForce models listed in the drop down box above, just select yours.

Q3: Can I use this if my truck is derated due to a DEF system code?
A: Absolutely. The tool will show you the exact reason for the derate (e.g., DEF sensor or dosing fault) and allow you to clear the code after fixing the underlying problem, helping you restore full engine power.

Q4: What other systems can I diagnose?
A: This is a full-system tool: besides DEF/aftertreatment, you’ll get coverage for engine, transmission, brakes/ABS, emissions, chassis/body electronics, live data (RPM, fuel, temps, etc.), and more.

Q5: Is it easy to use? Do I need special software?
A: It’s plug-and-play—no batteries, software installation, or special skills needed. Just connect to your truck’s diagnostic port, follow the simple menu, and you’re set!

Q6: Must I fix the problem first for the trouble code to clear?
A: Yes as with any diagnostic fault code, especially DEF / SCR related codes, the problem must be fixed for the fault to clear and stay clear.