Bobcat Fault Codes
Bobcat is the dominant compact equipment brand in North American skid-steer, compact track loader, and mini-excavator markets. Bobcat doesn't build its own engines -- modern S, T, and E series machines run a Kubota V3800-CR-TIER4F or a Doosan/Develon D24/D34 (Doosan Bobcat is the parent company). Operator display codes appear as 2-3 digit codes on the cluster (CODE-01, CODE-03, etc.) and full SPN/FMI is read with the Bobcat Service Analyzer dealer software.
61 fault codes documented· Kubota + Doosan engines · Display codes + SPN/FMI · 2012 - present (Tier 4 Final)
Most Common Bobcat Fault Codes
Showing 24 of 61 Bobcat codes, sorted by severity. Each links to causes, diagnostics, common fixes, and repair cost estimates.
BOBCAT-CODE-01 critical
Bobcat Operator Display Code 01 - Engine Oil Pressure Low
BOBCAT-CODE-03 critical
Bobcat Operator Display Code 03 - Engine Coolant Temperature High
BOBCAT-CODE-12 critical
Bobcat Operator Display Code 12 - Engine Overspeed
BOBCAT-P0087 critical
Fuel Rail Pressure Too Low
BOBCAT-P0087-854E critical
Fuel Rail Pressure Too Low (Perkins 854E)
BOBCAT-P0087-D24 critical
Fuel Rail Pressure Too Low (Doosan D24)
BOBCAT-P0217 critical
Engine Coolant Overtemperature Condition
BOBCAT-U0100 critical
Lost Communication with ECM / PCM A
BOBCAT-CODE-06 serious
Bobcat Operator Display Code 06 - Hydraulic Charge Pressure Low
BOBCAT-CODE-19 serious
Bobcat Operator Display Code 19 - Engine Oil Level Low
BOBCAT-CODE-22 serious
Bobcat Operator Display Code 22 - Hydraulic Oil Temperature High
BOBCAT-CODE-25 serious
Bobcat Operator Display Code 25 - Battery Voltage Out of Range
BOBCAT-CODE-27 serious
Bobcat Operator Display Code 27 - Engine Start Inhibit
BOBCAT-CODE-33 serious
Bobcat Operator Display Code 33 - ECU Power Supply Fault
BOBCAT-CODE-37 serious
Bobcat Operator Display Code 37 - Fuel Water Separator Full
BOBCAT-CODE-45 serious
Bobcat Operator Display Code 45 - DEF Quality Fault
BOBCAT-CODE-58 serious
Bobcat Operator Display Code 58 - Hydraulic Piston Pump Fault
BOBCAT-CODE-77 serious
Bobcat Operator Display Code 77 - Accelerator / Foot Throttle Fault
BOBCAT-CODE-93 serious
Bobcat Operator Display Code 93 - Transmission / Hydrostat Sensor Fault
BOBCAT-CODE-96 serious
Bobcat Operator Display Code 96 - Aftertreatment Harness Fault
BOBCAT-CODE-99 serious
Bobcat Operator Display Code 99 - Bobcat Communication Error - Service Required
BOBCAT-M0307 serious
Bobcat Engine Derate Active - Aftertreatment Inducement
BOBCAT-M0311 serious
Bobcat Hydraulic Oil Temperature High
BOBCAT-M1212 serious
Bobcat Drive Motor Fault - Left Hydrostatic
Bobcat Engine Configurations
| Engine | Years | Applications | Notes |
|---|---|---|---|
| Bobcat with Kubota V3800-CR-TIER4F | 2014-present | S650, S740, S750, S770, S850 skid steer loaders; T650, T750, T770, T870 compact track loaders; E50, E55, E60, E85 mini excavators; UW56 utility vehicle | 3.8L Kubota common-rail with DPF + EGR. The standard engine in modern mid- and full-size Bobcat machines. |
| Bobcat with Doosan D24 | 2012-present | S630, S650 skid steer loaders; T630, T650 compact track loaders; E55 mini ex | 2.4L Doosan (now Develon — same parent company as Bobcat). Smaller machines on Tier 4 Final emissions. |
| Bobcat with Doosan D34 | 2014-present | S770, S850 skid steer loaders; T870 compact track loader | 3.4L Doosan/Develon for the larger machines. Common-rail with cooled EGR + DPF. |
Common Bobcat Issues
- Operator display fault codes (CODE-01 oil pressure, CODE-03 coolant high, CODE-05 charging, etc.) -- consult Operation & Maintenance Manual for the family
- DPF clogging from short-cycle skid-steer work (load-haul-dump pattern) requiring forced regen via Bobcat Service Analyzer
- EGR valve carbon-fouling on V3800 and D24/D34 platforms
- Charging system / alternator faults on machines used for heavy hydraulic-only work without engine load
- Hydraulic charge pressure faults that cascade into engine derate codes
- Coolant temp high from blocked rad fins / hydraulic cooler in dusty environments
- Common-rail pressure / SCV faults on V3800-powered machines