P016D
Excessive Time To Enter Closed Loop Fuel Pressure Control
ECU took longer than allowed to close the loop on fuel pressure control. Pressure rise too slow at start.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Symptoms
- Check engine light on
- Hard start, no start, or stalling under load
- Power loss especially at high load or rpm
- Possible long cranking time
Common causes
Ordered by how often each turns out to be the cause.
- Lift pump weakCommon
Parts involved
- High Pressure Fuel Pump
- Lift Pump
- Fuel Filter
P016D 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.