P015E
Excessive Time to Enter Closed Loop Fuel Timing Control
Generic OBD-II
Common symptoms
What you'll notice
- Check and replace faulty oxygen sensor
- Inspect and clean the mass airflow sensor (MAF)
- Check and clean the throttle body
- Replace clogged or dirty fuel injectors
- Inspect and replace the engine coolant temperature sensor (ECT) if necessary
Common causes
Most likely first
- Faulty oxygen sensor
- Dirty or clogged fuel injectors
- Malfunctioning catalytic converter
- Vacuum leak in the intake manifold
- Incorrect engine coolant temperature sensor reading
How to diagnose & fix
Work through it in order
- Delayed or sluggish acceleration
- Decreased fuel efficiency
- Engine misfires or rough idle
- Illuminated check engine light
- Difficulty starting the vehicle
Read & clear P015E yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.