P02D0

Cylinder 3 Fuel Injector A Offset Learning At Min Limit

Q: Is it safe to drive with P02D0?

Usually yes for a short time, but the ECM has run out of adjustment for that injector, so cylinder 3 may run slightly off. Have it diagnosed before it develops into a misfire.

Q: Can I just clear P02D0?

It comes back once the ECM relearns and hits the limit again. The underlying injector or circuit needs attention, and injector learning may need resetting after repair.

Fuel injection — cylinder 3 Generic OBD-II High

What it means

P02D0 means the ECM's learned fuel-injection correction (offset) for cylinder 3 has reached its minimum limit, so it can no longer compensate for that injector's behavior. It usually points to a worn or drifting injector or a circuit issue, and often shows up only as a warning light before it develops into rougher running or a misfire.

High

Can I keep driving? Usually drivable — the ECM can no longer trim cylinder 3's injector, which may cause slightly rough running or reduced power. Have it checked before it worsens.

Real-world scan data

Seen in

scans in the past year

Found in

<0.1%

of scans

<0.1%

of scans that found faults

Appears alongside · share of P02D0 scans

P02CFin 70.5% of scans

P009Ain 69.3% of scans

P0116in 69.3% of scans

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

Common symptoms

What you'll notice

Check-engine light on
Often no obvious symptom beyond the light
Slightly rough idle or reduced power
Possible cylinder 3 misfire or balance fault in severe cases

Common causes

Most likely first

Worn or drifting cylinder 3 injector outside its learnable rangeLikely
Injector or fuel delivery that has changed from its expected characteristicCommon
Wiring or connector fault at the injector affecting its responseCommon
Fuel injector control module or its supply/ground circuit faultLess often
Faulty ECM (least likely)Less often

How to diagnose & fix

Work through it in order

Read freeze-frame data and check for companion injector or misfire codes on cylinder 3.
Inspect the cylinder 3 injector connector, wiring, and grounds for damage or corrosion.
Verify fuel pressure and the injector's coil resistance against spec.
Test the injector control module's supply voltage and ground circuits.
Replace the worn injector if it's out of its learnable range, then reset the injector learning and re-test.

FAQ

Quick answers

Is it safe to drive with P02D0?+

Usually yes for a short time, but the ECM has run out of adjustment for that injector, so cylinder 3 may run slightly off. Have it diagnosed before it develops into a misfire.

Can I just clear P02D0?+

It comes back once the ECM relearns and hits the limit again. The underlying injector or circuit needs attention, and injector learning may need resetting after repair.

Read & clear P02D0 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX