How many fault codes does the Caterpillar C15 ACERT have?

The Caterpillar C15 ACERT has 5 documented fault codes in our database, covering J1939 protocols.

What diagnostic protocols does the Caterpillar C15 ACERT use?

The Caterpillar C15 ACERT uses the J1939 diagnostic protocol(s).

Can I drive with an active fault code on my Caterpillar C15 ACERT?

It depends on severity. STOP ENGINE codes require immediate shutdown. CHECK AT NEXT STOP codes allow driving to a nearby service facility. CHECK SOON codes permit normal operation but schedule service promptly.

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Caterpillar C15 ACERT Fault Codes

Complete diagnostic trouble code reference for the Caterpillar C15 ACERT heavy-duty diesel engine. 5 fault codes • Protocols: J1939

SPN 100 FMI 1

Engine Oil Pressure Low

Component: Engine Oil Pump / Lubrication System • J1939 SPN:100 FMI:1

🔴 STOP ENGINE

SPN 110 FMI 0

Engine Coolant Temperature High

Component: Cooling System • J1939 SPN:110 FMI:0

🔴 STOP ENGINE

SPN 164 FMI 0

Injector Metering Rail Pressure 1

Component: HEUI Injector System / High Pressure Oil Pump • J1939 SPN:164 FMI:0

🟡 CHECK AT NEXT STOP

SPN 5394 FMI 17

DPF Differential Pressure Too High

Component: Diesel Particulate Filter (DPF) • J1939 SPN:5394 FMI:17

🟡 CHECK AT NEXT STOP

SPN 4364 FMI 0

SCR NOx Conversion Efficiency Low

Component: Selective Catalytic Reduction (SCR) System • J1939 SPN:4364 FMI:0

🟠 CHECK SOON

Engine Series Coverage: Caterpillar C15 ACERT engine specifications and fault codes sourced from SAE J1939/J1587 public standards and OEM technical service documentation. Last reviewed 2026-08-02T11:35:44Z.