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P02D5

Cylinder 5 Fuel Injector A Offset Learning At Max Limit

Fuel injection Generic OBD-II High

What it means

P02D5 means the ECM's learned fueling correction for cylinder 5's injector has reached its maximum limit — the computer has adjusted that injector as far as it's allowed and still can't bring it into balance. It usually points to an injector that's worn or out of spec, or a wiring/fuel-delivery issue affecting it. The engine may run slightly rough or down on power but still starts.

High

Can I keep driving? Usually drivable — the ECM's learned correction for cylinder 5's injector has maxed out, which may cause rough running or lost power. Have it diagnosed.

Real-world scan data

Seen in
57
scans in the past year
Found in
<0.1%
of scans
<0.1%
of scans that found faults

Appears alongside · share of P02D5 scans

P0094in 100.0% of scans
P009Ain 100.0% of scans
P0116in 100.0% 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

Common causes

Most likely first

  1. Worn or out-of-spec injector on cylinder 5
  2. Wiring or connector fault at the cylinder 5 injector
  3. Low or uneven fuel pressure/delivery to that injector
  4. Faulty injector control module

How to diagnose & fix

Work through it in order

  1. Read freeze-frame data and check the cylinder 5 injector correction/offset values with a scan tool.
  2. Inspect the injector connector and wiring for opens, corrosion, or poor contact.
  3. Test the injector electrically and, where supported, verify its coding/calibration data.
  4. Check fuel pressure and delivery to rule out a supply problem.
  5. Replace the out-of-spec injector (and program its code if required); suspect the control module last.

FAQ

Quick answers

Is it safe to drive with P02D5?+
Short-term, usually — but the injector is drifting out of spec and can cause rough running. Get it diagnosed before it worsens or fouls the cylinder.
Can I just clear P02D5?+
It returns once the ECM's learned correction hits the maximum again. The injector or its wiring has to be fixed.

Related codes

P02D4Cylinder 5 Fuel Injector A Offset Learning…P02D6Cylinder 6 Fuel Injector A Offset Learning…P0305Cylinder 5 Misfire Detected

Read & clear P02D5 yourself

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

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