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Detroit Diesel Diagnostic Specialists

Expert remote diagnostics and support for DD13, DD15, and DD16 engines. MCM/CPC module troubleshooting and aftertreatment repair from certified 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

Chassis Power Controller handling aftertreatment, transmission, and vehicle systems integration.

Common Detroit Issues We Solve

Turbo Actuator Failures

VGT turbo actuator calibration issues, sticking vanes, and position sensor faults causing low power and black smoke conditions.

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 diesel diagnostic training covering aftertreatment systems, turbo actuator calibration, 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 certified technicians are available for remote diagnostics and expert Detroit engine support.

Contact Us Now Call (800) 697-7626

Other 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.