Powertrain
generic / SAE
P25BD
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.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / BD
Possible causes
- Turbocharger oil seal leak feeds engine oil into the intake high
- Oil collected in the intercooler is sucked into the engine on load medium
- Failed PCV / crankcase breather floods intake with oil mist medium
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 400–4000 €
- Estimated time: 3–10 h
- Component: turbocharger seals
- Component: intercooler
- Component: intake manifold
- Component: air shutoff valve
- MIL / check engine light
Sources
References
sae:J2012