P000E
Fuel Volume Regulator Control Exceeded Learning Limit
The ECU's adaptive correction of fuel volume regulator A has reached its learning limit. Indicates a long-term drift between commanded and actual rail pressure that could no longer be compensated.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: hard
Common causes
Ordered by how often each turns out to be the cause.
- HP pump worn outCommon
- Fuel filter clogged, restricted supplyPossible
- Internal leak (injector or rail)Possible
Parts involved
- High Pressure Fuel Pump
- Fuel Volume Regulator
- Fuel Filter
- Fuel Rail Pressure Sensor
P000E is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.