Volvo D13 Fault Codes Reference (Top 18) | HDT
Volvo D13 powers most Volvo VNL, VNR, and VHD trucks built since 2007. The D11 (smaller regional) and D16 (heavy…
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Cat C15 Fault Codes Reference (Top 18) | HDT
Caterpillar C15 (and the smaller C13, larger C16) was Cat’s last on-highway HD lineup before Cat exited US Class 8…
Read More →International A26 & MaxxForce Fault Codes Reference | HDT
International HD trucks run two distinct engine families: the current A26 (Detroit DD13 derivative, in production since 2017) and the…
Read More →Mack MP8 Fault Codes Reference (Top 18) | HDT
Mack MP8 (and the smaller MP7) power most modern Mack Anthem, Pinnacle, Granite, and Pi vocational trucks. Mack and Volvo…
Read More →Heavy Duty ABS Diagnostic Tools — Bendix, WABCO, Haldex | HDT
Heavy-duty ABS isn’t optional anymore. Class 6-8 tractors require electronic stability control, trailer ABS is a federal mandate, and the…
Read More →Fleet Diagnostic Tool Buying Guide — Multi-Bay Setups | HDT
Buying diagnostic tools for a fleet maintenance operation is a different problem than buying for an independent shop. The decision…
Read More →PACCAR MX-13 Fault Codes Reference (Top 15) | HDT
PACCAR MX-13 and MX-11 engines power most modern Kenworth T680/T880 and Peterbilt 579/567 chassis. The 15 codes below are the…
Read More →Dealer-Level vs Aftermarket Diagnostic Tools | HDT
“Dealer-level” gets used as a marketing word more than a technical one. Inside a dealer service bay, dealer-level means the…
Read More →Cummins ISX Fault Codes Reference (Top 20) | HDT
Cummins ISX and X15 share most of their fault code architecture. The codes below are the 20 we see most…
Read More →Detroit DD15 Fault Codes Reference (Top 20) | HDT
Detroit DD13, DD15, and DD16 engines (and the related International A26 derivative) share most of their fault code architecture across…
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