How many fault codes does the Mack MP8 have?

The Mack MP8 has 5 documented fault codes in our database, covering J1939 protocols.

What diagnostic protocols does the Mack MP8 use?

The Mack MP8 uses the J1939 diagnostic protocol(s).

Can I drive with an active fault code on my Mack MP8?

It depends on severity. STOP ENGINE codes require immediate shutdown. CHECK AT NEXT STOP codes allow driving to a nearby service facility. CHECK SOON codes permit normal operation but schedule service promptly.

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Mack MP8 Fault Codes

Complete diagnostic trouble code reference for the Mack MP8 heavy-duty diesel engine. 5 fault codes • Protocols: J1939

SPN 1569 FMI 31

Engine Protection Torque Derate

Component: Engine Control Module (ECM) • J1939 SPN:1569 FMI:31

🔴 STOP ENGINE

SPN 3226 FMI 20

EGR Valve Position Control Error

Component: Exhaust Gas Recirculation (EGR) Valve • J1939 SPN:3226 FMI:20

🟡 CHECK AT NEXT STOP

SPN 410 FMI 0

EGR Differential Pressure Too High

Component: EGR Cooler / Differential Pressure Sensor • J1939 SPN:410 FMI:0

🟡 CHECK AT NEXT STOP

SPN 102 FMI 18

Intake Manifold Pressure Low

Component: Turbocharger / Charge Air System • J1939 SPN:102 FMI:18

🟡 CHECK AT NEXT STOP

SPN 94 FMI 1

Fuel Delivery Pressure Low

Component: Fuel Supply System / Transfer Pump • J1939 SPN:94 FMI:1

🔴 STOP ENGINE

Engine Series Coverage: Mack MP8 engine specifications and fault codes sourced from SAE J1939/J1587 public standards and OEM technical service documentation. Last reviewed 2026-08-02T11:35:44Z.