P026B
Injection Timing Performance
Generic OBD-II
Common symptoms
What you'll notice
- Check for any loose or damaged connectors or wiring related to the fuel injection system.
- Inspect and replace any faulty fuel injectors.
- Clean or replace clogged fuel filters.
- Check and adjust the injection timing according to the manufacturer's specifications.
- Inspect and clean the throttle body and idle air control valve.
Common causes
Most likely first
- Incorrect fuel injection timing setting
- Malfunctioning fuel injectors
- Clogged or dirty fuel injectors
- Faulty fuel pressure regulator
- Issues with the engine control module (ECM) or engine management system
How to diagnose & fix
Work through it in order
- Engine misfires or stalls during operation
- Decreased engine power or acceleration
- Poor fuel efficiency
- Difficulty starting the vehicle
- Rough idle
Read & clear P026B yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.