Peterbilt Diesel Fault Codes
24 Peterbilt 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 (7)
- Guide 579-DEF — Peterbilt 579 DEF Quality System
- SPN 3242 FMI 3 — DPF Intake Gas Temperature Sensor
- SPN 3246 FMI 18 — DPF Outlet Gas Temperature
- SPN 3364 FMI 9 — DEF Quality Sensor
- SPN 3609 FMI 3 — DPF Intake Pressure Sensor
- SPN 4094 FMI 16 — DPF Soot Load Sensor/Model
- SPN 4364 FMI 3 — SCR NOx Conversion Efficiency
Fuel (3)
Air/Turbo (4)
Coolant (2)
Sensors/Other (8)
- SPN 100 FMI 1 — Engine Oil Pressure Sensor / Oil Pressure Circuit
- SPN 100 FMI 18 — Engine Oil Pressure
- SPN 132 FMI 2 — Engine Inlet Air Mass Flow Rate Sensor
- SPN 168 FMI 0 — Battery / ECU Power Supply Voltage
- SPN 175 FMI 1 — Engine Oil Temperature Sensor
- SPN 175 FMI 3 — Engine Oil Temperature Sensor
- SPN 1188 FMI 3 — Wastegate Actuator Position Sensor
- SPN 1231 FMI 9 — J1939 Network #2 (Secondary CAN Bus)