OBD
P016D
Excessive Time To Enter Closed Loop Fuel Pressure Control
What it means
P016D means Excessive Time To Enter Closed Loop Fuel Pressure Control.
Check these first
- A thermostat stuck open
- A failed fuel pressure regulator
- A faulty engine coolant temperature sensor
- A lazy oxygen sensor
- A faulty ECM control strategy
What to do next
- Check the ECT warm-up reading
- Check the fuel pressure control operation
- Test the oxygen sensor response
- Test the fuel pressure regulator
- Verify the thermostat closes
- Clear the code and retest
Look up another code
Enter a full code or a symptom. Press / to search. How to read a code
Type a code above, or start from a symptom or a common code.
Updated
Generic SAE J2012 definition. Last updated 2026-10-10.