PACCAR Diesel Fault Codes
40 PACCAR diagnostic pages, grouped by the system the code belongs to. Each page covers symptoms, the tests to run in order, tools needed, and realistic parts and labor cost ranges.
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Aftertreatment (16)
- Guide MX-13-SCR — PACCAR MX-13 SCR Inducement System
- SPN 3216 FMI 0 — SCR Intake NOx Sensor
- SPN 3226 FMI 0 — SCR Outlet NOx Sensor
- SPN 3242 FMI 16 — DPF Intake Gas Temperature Sensor
- SPN 3251 FMI 18 — DPF Differential Pressure Sensor
- SPN 3364 FMI 9 — DEF Quality
- SPN 3609 FMI 16 — DPF Intake Pressure Sensor
- SPN 3719 FMI 0 — DPF Ash Load
- SPN 3719 FMI 16 — DPF Ash Load
- SPN 3936 FMI 0 — SCR Conversion Efficiency (NOx Sensors)
- SPN 4094 FMI 16 — DPF Soot Load
- SPN 4358 FMI 16 — SCR Differential Pressure Sensor
- SPN 4364 FMI 18 — SCR NOx Efficiency
- SPN 5246 FMI 0 — SCR Inducement
- SPN 5246 FMI 16 — SCR System
- SPN 8064 FMI 12 — SCR Catalyst Temperature Sensor
Fuel (6)
Air/Turbo (4)
Coolant (3)
Sensors/Other (11)
- SPN 27 FMI 3 — EGR Valve Position Sensor
- SPN 91 FMI 5 — Accelerator Pedal Position
- SPN 91 FMI 13 — Accelerator Pedal Position Sensor
- SPN 100 FMI 1 — Engine Oil Pressure Sensor
- SPN 100 FMI 2 — Engine Oil Pressure
- SPN 168 FMI 1 — Battery / Charging System Circuit
- SPN 190 FMI 0 — Engine Speed Sensor Circuit
- SPN 636 FMI 8 — Crankshaft Position Sensor
- SPN 1188 FMI 3 — Turbocharger Wastegate Actuator Position Sensor
- SPN 1209 FMI 16 — Engine Exhaust Gas Pressure
- SPN 3510 FMI 3 — 5-Volt Sensor Supply Voltage 2