PACCAR MX-13 Fault Codes

Complete diagnostic trouble code reference for the PACCAR MX-13 heavy-duty diesel engine. 7 fault codes • Protocols: J1587, J1939

🔧 Engine Context: The PACCAR MX-13 is a 12.9-liter engine designed in the Netherlands by DAF Trucks and manufactured in Mississippi for Kenworth and Peterbilt trucks. The MX-13 uses an ultra-high-pressure common rail system (2,500+ bar) requiring extremely clean fuel. Fuel contamination issues manifest as rail pressure codes (SPN 1077). This engine is also sensitive to crankshaft position sensor issues (SPN 647).

SPN 1077 FMI 14

High Pressure Fuel Rail Pressure

Component: High Pressure Fuel Pump / Rail • J1939 SPN:1077 FMI:14

🔴 STOP ENGINE

SPN 1347 FMI 7

Fuel Pump Pressurizing Assembly (HPP)

Component: High Pressure Fuel Pump (HPP) • J1939 SPN:1347 FMI:7

🔴 STOP ENGINE

SPN 647 FMI 4

Engine Speed Sensor

Component: Crankshaft Position Sensor (CKP) • J1939 SPN:647 FMI:4

🟡 CHECK AT NEXT STOP

SPN 91 FMI 16

Accelerator Pedal Position

Component: Accelerator Pedal Assembly (APP) • J1939 SPN:91 FMI:16

🟡 CHECK AT NEXT STOP

MID 130 PID 52 FMI 5

Transmission Oil Temperature Sensor

Component: Transmission Oil Temp Sensor / Harness • J1587 MID:130 PID:52

🟡 CHECK AT NEXT STOP

SPN 411 FMI 16

Exhaust Gas Recirculation (EGR) Differential Pressure

Component: EGR Differential Pressure Sensor / EGR System • J1939 SPN:411 FMI:16

🟠 CHECK SOON

MID 128 PID 105 FMI 10

Intake Manifold Temperature

Component: Intake Manifold Temperature Sensor • J1587 MID:128 PID:105

🟠 CHECK SOON

Engine Series Coverage: PACCAR MX-13 engine specifications and fault codes sourced from SAE J1939/J1587 public standards and OEM technical service documentation. Last reviewed 2026-07-06T15:05:01Z.