Unmetered Fuel - Forced Engine Shutdown
The engine controller commanded a forced shutdown after detecting unmetered fuel reaching the combustion chambers. Common on diesels with leaking turbo seals or cracked intercoolers that drip oil into the intake — the engine then runs on the oil and can overspeed.
Affected components
- Turbocharger seals
- Intercooler
- Intake manifold
- Air shutoff valve
Common causes
- High likelihood: Turbocharger oil seal leak feeds engine oil into the intake
- Medium likelihood: Oil collected in the intercooler is sucked into the engine on load
- Medium likelihood: Failed PCV / crankcase breather floods intake with oil mist
Diagnostic notes
- The malfunction indicator lamp may illuminate
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.