AftertreatmentMack Diesel ECM

U116F-00

Name: ECM Performance
Address: Fort Lauderdale, FL, 33325, US
Telephone: (888) 768-2447
Price range: $$-$$$

DPF, DEF, SCR, and NOx-reduction system faults.

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System

Mack Aftertreatment

Mack ECM Service

Diagnostic Overview

Mack fault code U116F00 is a manufacturer-specific communication or network-related aftertreatment fault. It may indicate that one of the aftertreatment modules or sensors is not communicating correctly or that the ECM is receiving implausible network data. These faults can disable aftertreatment functions and trigger warnings.

Likely Causes

CAN data-link issue; module communication fault; connector corrosion; low voltage; wiring damage; aftertreatment sensor/module failure.

What To Check First

Check battery voltage, data-link communication, aftertreatment module connectors, and related U-codes. Confirm the exact Tech Tool description for the VIN.

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Internal Linking

Related Aftertreatment Fault Codes

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P046C-64

Mack fault code P046C64 generally points to an EGR differential pressure sensor range or performance problem.

P20D0

Mack fault code P20D0 is commonly associated with the aftertreatment fuel dosing or hydrocarbon dosing system used to raise exhaust temperature during DPF regeneration.

P20D0-00

Mack fault code P20D000 usually indicates a general aftertreatment fuel dosing control fault.

P20DC-00

Mack fault code P20DC00 is commonly related to aftertreatment fuel supply, dosing control, or dosing-circuit performance.

P21CA-00

Mack fault code P21CA00 is generally tied to reductant/DEF or aftertreatment control performance depending on the specific Mack/Volvo engine calibration.

P24F8-13

Mack fault code P24F813 is typically an aftertreatment-related rationality or calibration-style fault.

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