DEF System Malfunction? Fix SCR issues instantly
Professional semi truck diagnostic scanner that reads DEF codes, monitors fluid levels, and performs SCR system tests - Stop costly breakdowns now
DEF System Failures Cost You Money Every Hour
Are you dealing with these critical DEF system problems?
🚨 Engine Derate Warning
Speed and power limited due to DEF system faults
🧪 DEF Quality Poor
Contaminated or degraded DEF fluid triggering errors
❄️ DEF System Frozen
Cold weather causing DEF crystallization and blockages
💧 DEF Tank Empty Warning
Inaccurate level readings or sensor malfunctions
🔧 SCR System Efficiency Low
NOx reduction not meeting EPA requirements
⚠️ DEF Injector Problems
Clogged or failed injectors preventing proper dosing
Your Complete DEF System Diagnostic Solution
📊 Read Every DEF/SCR Code
- P20EE - SCR NOx Catalyst Efficiency
- P207F - DEF Quality Poor
- P20B8 - DEF Tank Heater Performance
- P204F - DEF System Performance
- P2047 - DEF Injector Circuit Range
- P20BD - DEF Tank Temperature Sensor
📈 Monitor Live DEF Data
- DEF fluid level and quality readings
- SCR catalyst temperature monitoring
- DEF injection rate and pressure
- NOx sensor upstream/downstream
- DEF tank heater status
- Ammonia slip catalyst efficiency
🔧 Perform DEF System Tests
- DEF injector flow rate testing
- SCR catalyst efficiency tests
- DEF quality verification
- Tank heater operation check
- Pressure sensor calibration
- NOx sensor functionality test
Common DEF/SCR Fault Codes We Solve
| Code | Description | Our Solution |
|---|---|---|
| P20EE | SCR NOx Catalyst Efficiency Below Threshold | Monitor catalyst temps, test NOx reduction |
| P207F | DEF Quality Poor | Test DEF concentration, identify contamination |
| P20B8 | DEF Tank Heater Performance | Test heater circuits, monitor temperatures |
| P204F | DEF System Performance | Comprehensive system analysis and testing |
| P2047 | DEF Injector Circuit Range/Performance | Test injector flow rates and electrical circuits |
| P20BD | DEF Tank Temperature Sensor Circuit | Verify sensor readings and wiring integrity |
The Cost of DEF System Downtime:
$800 - $1500 per day in lost revenue, plus emergency DEF service calls, towing, and failed inspections
Why Professional Drivers Choose Our DEF Scanner
⏱️ Diagnose DEF Issues in Minutes
Quickly identify DEF quality, injector, and SCR problems before they cause derate.
🧪 Test DEF Quality Instantly
Verify DEF concentration and purity without expensive lab testing.
💰 Avoid $2,000+ Repairs
Catch DEF system problems before they damage expensive SCR components.
❄️ Cold Weather Troubleshooting
Monitor DEF heater performance and prevent freeze-related issues.
🛡️ Prevent EPA Violations
Ensure NOx emissions compliance and avoid costly fines.
📊 Track System Performance
Monitor SCR efficiency trends and optimize DEF consumption.
Frequently Asked Questions
What should I do if my DEF tank is showing empty but I just filled it?
This usually indicates a faulty DEF level sensor or wiring issue. Our scanner can test the sensor circuit, read actual vs. reported levels, and help you determine if it's a sensor problem, wiring fault, or tank contamination issue. We'll guide you through the diagnostic process step-by-step.
How does the scanner help with DEF system problems in cold weather?
Our scanner monitors DEF tank heater performance, tracks heating element operation, and can test heater circuits. It shows real-time DEF temperature data and helps diagnose frozen lines, failed heaters, or thermal management issues that commonly occur in winter conditions.
Can I test my SCR catalyst efficiency to avoid costly replacements?
Absolutely! The scanner monitors NOx sensor readings before and after the SCR catalyst, calculates reduction efficiency, and tracks catalyst performance over time. This helps you determine if poor performance is due to the catalyst itself, DEF quality issues, or other system problems before spending thousands on replacement.
Will this scanner help me avoid EPA violations and fines?
Yes! Our scanner helps you maintain proper NOx emissions by monitoring SCR system performance, DEF quality, and catalyst efficiency. You can proactively address issues before they cause emissions violations. The scanner also documents system performance data that can be valuable during inspections.
How do I know if my DEF injector is clogged or failing?
Our scanner monitors DEF injection rates, pressure readings, and flow patterns in real-time. If your injector is clogged, you'll see reduced flow rates and pressure irregularities. The scanner can also perform injector tests to verify proper operation and help you determine if cleaning or replacement is needed.
Can the scanner detect if I'm using the wrong type of DEF fluid?
Absolutely! The scanner reads DEF quality sensors and can detect if you're using automotive-grade DEF instead of heavy-duty truck DEF, or if the fluid has been contaminated with water, fuel, or other substances. It will alert you to concentration issues that could damage your SCR system.
What happens if I ignore DEF system warning lights?
Ignoring DEF warnings leads to engine derate (reduced power and speed), eventual shutdown, and potential SCR system damage costing $5,000-$15,000 to repair. Our scanner helps you address issues early before they escalate to costly failures or roadside breakdowns.
How often should I test my DEF system with the scanner?
We recommend weekly DEF system checks during your pre-trip inspections, and immediately anytime you see warning lights or experience performance issues. Regular monitoring helps catch problems early and extends the life of expensive SCR components.
Does the scanner work with all truck engines and DEF systems?
Yes! Our scanner is compatible with all major truck engines including Cummins ISX, Detroit DD13/DD15/DD16, PACCAR MX-11/MX-13, Volvo D11/D13, and Mack MP7/MP8. It works with Cummins Aftertreatment, Detroit DDEC, and all other OEM SCR systems on 2010+ trucks.
✅ 60-Day Money-Back Guarantee
Order Your DEF Diagnostic Scanner Today
💰 $599
(Regular price $899)
📦 What's Included:
✅ Professional truck diagnostic scanner
✅ Complete DEF/SCR diagnostic capabilities
✅ Live DEF system data monitoring
✅ SCR catalyst efficiency testing
✅ DEF quality verification tools
✅ 24/7 technical support
✅ Free software updates
✅ Limited lifetime warranty
⚡ Free 2-Day Shipping
📞 24/7 Tech Support Hotline
🔄 60-Day Money-Back Guarantee
Don't let DEF system failures cost you money. Take control of your truck's emissions system today.
📞 Call Now: (586) 799-4375
🚛 Compatible with all major truck brands: Freightliner, Peterbilt, Kenworth, Volvo, Mack, International, and more.