P02DD
Cylinder 9 Fuel Injector A Offset Learning At Max Limit
The per-cylinder injector offset on cylinder 9 has reached its maximum value — the injector is delivering significantly less fuel than the calibrated reference, and the controller cannot trim it any further.
The per-cylinder injector offset on cylinder 9 has reached its maximum value — the injector is delivering significantly less fuel than the calibrated reference, and the controller cannot trim it any further.
Common causes
- high
Injector under-delivering
One of the most commonly reported causes for this code — check this first.
Typical part cost: $220-1650
See all causes + fix costs
Create a free Wrenchify account to unlock the rest for P02DD.
Unlock causesFree forever · No credit card
First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
Get the full step-by-step diagnosis
Create a free Wrenchify account to unlock the rest for P02DD.
Unlock diagnosisFree forever · No credit card
Related codes
See related trouble codes
Create a free Wrenchify account to unlock the rest for P02DD.
Unlock related codesFree forever · No credit card
Frequently asked questions
What does P02DD mean?
P02DD means "Cylinder 9 Fuel Injector A Offset Learning At Max Limit". It is a generic OBD-II code that points to a fault in the fuel & air metering (injector circuit).
What are the most common causes of P02DD?
injector under-delivering — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
Get the full P02DD diagnosis for your vehicle
Year, make, model + step-by-step repair help — free plan included.