Current John Deere DEF Fault Derate Timeline by Software
John Deere DEF derate timing depends on software. The 330G and 332G carry DEF; the 320G and 324G need none. EPA’s guidance uses a different clock.
Sourced to manufacturer documentation. Reviewed by our research team.
Spotted an error? contact@axleandhaul.com
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Spotted an error? contact@axleandhaul.com

John Deere DEF derate timing depends on software. The 330G and 332G carry DEF; the 320G and 324G need none. EPA’s guidance uses a different clock.

John Deere fault code list: Deere ties its manuals to your PIN, and PRO Service lets owners view codes. Here’s what to record before you call.

John Deere SPN FMI codes name a signal and how it failed. Deere’s table words FMI 0–19 and 31 and has no entries for 20–30.

John Deere 310SL vs 310SK, generation by generation: base weight 15,872 lb (redesigned 310SL) vs 14,708 lb, plus the federal four-tiedown minimum.

John Deere 544 vs 624 P-Tier: net power, pump flow and width against the 102-in. federal baseline, each tied to Deere’s own spec pages.

The John Deere 750 and 850 carry the same rated load on PAT blades. On OSD Semi-U blades the 850 holds 7.3 to 8.0 cu yd against the 750’s 5.6.

John Deere Hitachi cross reference starts with a date: the joint venture ended February 28, 2022. Learn which serial numbers and weights still line up.

John Deere P-Tier meaning depends on the line: compact loaders moved from L-Series in 2023, excavators from G-Series starting in 2022.

John Deere 17 P-Tier specs changed in October 2025. Each weight, dig depth and power rating here is labeled by generation, with its source.

John Deere wheel loader models span 0.9 to 10.25 cu yd, with Deere’s conflicting figures logged and widths checked against the federal 102 in.