Detroit Diesel Diagnostic Specialists
Expert remote diagnostics and support for DD13, DD15, and DD16 engines. MCM/CPC module troubleshooting and aftertreatment repair from diagnostic technicians.
Engines We Support
DD13
12.8L medium-bore engine for regional haul and vocational applications. GHG14/GHG17 emissions compliance.
DD15
14.8L flagship engine powering Freightliner Cascadia. The most popular heavy-duty diesel in North America.
DD16
15.6L high-horsepower engine for heavy-haul and vocational applications requiring maximum torque.
Series 60
Legacy Detroit engine still widely in service. 12.7L and 14.0L versions with DDEC IV/V electronics.
MCM 2.0 / 2.1
Motor Control Module managing engine operation. Requires DDDL for programming and advanced diagnostics.
CPC4
Common Powertrain Controller. Confirm its exact role, configuration and diagnostic procedure for the vehicle generation.
Common Detroit Issues We Solve
Turbo Actuator Failures
Turbo-control diagnosis must match the DD engine generation and actual turbo hardware. Some DD15 applications use a non-variable asymmetric turbocharger; a universal VGT procedure is inappropriate.
EGR Valve Problems
EGR valve coking, actuator failures, and cooler leaks leading to performance derates and overheating conditions.
DPF Delta-P Issues
Differential pressure sensor failures, high backpressure conditions, and ash-loaded DPF requiring cleaning or replacement.
SCR Catalyst Degradation
Reduced SCR conversion efficiency causing NOx derates. DEF dosing problems and catalyst replacement diagnostics.
One-Box Aftertreatment
Integrated aftertreatment system diagnostics including DPF, DOC, SCR, and DEF dosing unit within the single one-box assembly.
ACM Module Issues
Aftertreatment Control Module communication faults, software updates, and replacement programming procedures.
Our Detroit Diagnostic Services
Remote Diagnostics
Live remote sessions using DDDL/DiagnosticLink for real-time DD13/DD15/DD16 fault code analysis, data logging, and guided repair.
MCM/CPC Diagnostics
Advanced Motor Control Module and Chassis Power Controller troubleshooting including software updates and parameter programming.
Bench Harness Testing
Detroit-specific bench harness for testing MCM, CPC, and ACM modules outside the vehicle for efficient fault isolation.
Training & Support
Detroit diagnostic training and support for application-specific aftertreatment, turbo-control and module replacement procedures.
Recommended Tools
Detroit Bench Harness
Dedicated bench testing harness for Detroit MCM and CPC modules. Isolate and diagnose module-level faults without the vehicle.
Nexiq USB-Link 3
Required RP1210 adapter for DDDL/DiagnosticLink connectivity. Essential for Detroit diesel diagnostics and remote support sessions.
Detroit Resources
Need Detroit Diagnostic Help?
Our diagnostic technicians are available for remote diagnostics and expert Detroit engine support.
Contact Us Now Call (800) 697-7626Other Engine Platforms We Support
Cummins
ISX15, X15, ISB 6.7, and ISL engine diagnostics. ECM programming, aftertreatment repair, and INSITE remote support.
PACCAR
MX-13 and MX-11 engine support for Kenworth and Peterbilt. Davie4 diagnostics, HC doser repair, and ECM programming.
International / Navistar
MaxxForce and A26 engine diagnostics. EGR cooler repair, ServiceMaxx support, and aftertreatment troubleshooting.
Application and service references
Confirm engine serial, controller, model year, software and task before scheduling. These documents do not establish a Torque Edge credential or universal vehicle coverage.
ECM and module programming
Replacing a controller, updating an approved calibration or changing a supported parameter? Send the engine and module details for an assessment.