PACCAR (Kenworth & Peterbilt)
PACCAR fault code
SPN 723 / FMI 11
PACCAR Fault Code P0340: Camshaft Speed Signal – Disturbed or NO Signal During Engine Operation
P0340 on PACCAR (Kenworth & Peterbilt) engines means: Camshaft Speed Signal – Disturbed or NO Signal During Engine Operation. The failure mode (FMI 11) is “root cause not known”.
Code details
- Manufacturer
- PACCAR (Kenworth & Peterbilt)
- Applies to
- PACCAR MX-13 (2017–2020)
- Fault code
- P0340
- J1939 SPN
- 723
- FMI
- 11 — Root cause not known
- Truck models in source
- Kenworth T680, T880, W900, T800; Peterbilt 579, 389, 567, 367
What to do next
- Read active and inactive codes with the OEM service tool and note the occurrence count.
- FMI 11 tells the shop the type of failure to test for: root cause not known.
- Have a heavy-duty diesel technician confirm the fault against the engine or chassis service manual before replacing parts.
Get this code diagnosed
Send one request and nearby diesel shops and mobile mechanics can quote the repair.
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Related fault codes
- PACCAR Fault Code P0016 — Camshaft Speed Signal – Not Corresponding With Engine Position
- PACCAR Fault Code P0341 — Camshaft Speed Signal – Out of Range During Engine Operation
- PACCAR Fault Code P1340 — Camshaft Speed Signal – Disturbed or NO Signal During Engine Start
- PACCAR Fault Code P1341 — Camshaft Speed Signal – Out of Range During Engine Start
- Cummins Fault Code 753 — Engine Speed/Position #2 - Cam sync error
Source: PACCAR MX-13 2017–2020 fault code list (Diesel Laptops). See also OBD-II codes.