Powertrain
generic / SAE
P253F
Engine Oil Deteriorated
The oil quality monitor concludes that the engine oil has reached the end of its useful life — based on permittivity, soot content, fuel dilution and total operating hours. The ECM requests an oil change before the next regen cycle to prevent accelerated bearing wear.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / 3F
Possible causes
- Service interval exceeded high
- High DPF regeneration load with fuel dilution medium
Inspection / repair
- Difficulty: easy
- DIY: possible
- Estimated cost: 60–200 €
- Estimated time: 0.3–1 h
- Component: engine oil
- MIL / check engine light
Sources
References
sae:J2012