Engine Overspeed Condition
The ECU recorded an engine speed above the manufacturer's redline limit. Typical causes are missed downshifts, mis-shifts on a manual gearbox, or runaway diesel events. The code is informational but may trigger fuel cut-off and protective derate.
Affected components
- Engine
- Crankshaft position sensor
Common causes
- High likelihood: Missed downshift on manual transmission
- Low likelihood: Crankshaft sensor signal spike
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.