Kenworth Diesel Fault Codes
24 Kenworth 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 (6)
Fuel (4)
Air/Turbo (2)
Coolant (2)
Sensors/Other (10)
- SPN 91 FMI 3 — Accelerator Pedal Position Sensor Circuit
- SPN 100 FMI 0 — Engine Oil Pressure
- SPN 100 FMI 1 — Engine Oil Pressure Sensor
- SPN 108 FMI 3 — Barometric Pressure Sensor
- SPN 168 FMI 0 — Battery / Charging System Circuit
- SPN 172 FMI 4 — Engine Air Inlet Temperature Sensor
- SPN 172 FMI 16 — Engine Air Inlet Temperature Sensor
- SPN 636 FMI 3 — Crankshaft Position Sensor
- SPN 637 FMI 4 — Engine Timing / Cam Position Sensor
- SPN 646 FMI 7 — Turbocharger Wastegate Drive