Toggle Side Panel

Shopping Cart

No products in the basket.

Shopping Cart

No products in the basket.

Close search
Home / DTC / P02D1 — Cylinder 3 - learning the fuel injector displacement maximum limit

P02D1 — Cylinder 3 - learning the fuel injector displacement maximum limit

Detailed page for trouble code P02D1.

34,405codes
59brands
11,914generic
22,491specific
All codes P-codes (Powertrain) B-codes (Body) C-codes (Chassis) U-codes (Network/User) Tesla Alerts
Reset
Code

P02D1

LAND ROVER P — Powertrain

Cylinder 3 - learning the fuel injector displacement maximum limit

Brand: LAND ROVER
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Fuel injector on cylinder 3 degraded, clogged, stuck or leaking
  • Injector electrical fault (open/short/intermittent wiring or connector)
  • Low or unstable common-rail fuel pressure
  • Contaminated or poor-quality fuel
  • ECU adaptation limit reached after repeated compensation
  • Internal engine condition affecting effective fuel (compression or valve issues)

Symptoms

  • Malfunction Indicator Lamp (MIL) lit
  • Rough idle or engine runs uneven, especially at low load
  • Reduced engine power and hesitation
  • Increased smoke from exhaust (diesel: black/white depending on condition)
  • Poor fuel economy
  • Possible hard starting or misfire on cylinder 3

What to check

  • Read freeze frame and live data with manufacturer-level scan tool; note injector adaptation / displacement value for cylinder 3
  • Confirm software/calibration level and check for any ECM updates or service bulletins
  • Visual inspection of injector harness and connector for damage, corrosion, or poor seating
  • Measure injector resistance and compare to spec
  • Monitor injector pulse width, injector current waveform and fuel rail pressure with a scope/scan tool
  • Check fuel quality and drain/filter if contamination suspected

Signal parameters

  • Injector pulse width (ms) — varies with load; check against expected values for given RPM/load
  • Injector commanded displacement/adaptation value (ECU units) and limit flag — look for value at or near max limit
  • Injector driver current/voltage waveform (A or V) — solenoid activation signature and amplitude
  • Fuel rail pressure (bar/psi) — must be within manufacturer specified range under test conditions
  • Short-term and long-term fuel trim / cylinder fuel balance values (where available)

Diagnostic algorithm

  1. Connect a capable scan tool, read and record DTC, freeze frame and live data including injector adaptation values and fuel rail pressure.
  2. Clear codes, perform a road or engine run test to see if the code reappears and to reproduce symptoms.
  3. Visually inspect wiring and connector for cylinder 3 injector; wiggle test while monitoring for changes in injector data or misfire counts.
  4. Measure injector coil resistance at ambient temperature and compare to spec; check for short to ground or open circuit.
  5. With an oscilloscope or current clamp, inspect injector drive waveform and current profile for cylinder 3 and compare to a known-good cylinder.
  6. Check fuel rail pressure and regulator function under key-on and engine-run conditions; verify no fuel supply issues.
  7. Perform a cylinder balance or injector on/off test: disable injector 3 to see change in RPM/torque to confirm injector contribution.
  8. Swap the injector from cylinder 3 with another cylinder (if practical) and re-run tests to see if the adaptation fault follows the injector or stays with cylinder 3 (observe safety and manufacturer guidance).
  9. If confirmed injector-related, consider professional bench flow/test, cleaning or replacement of the injector and then perform injector adaptation/relearn procedure per factory instructions.
  10. If wiring/ECU suspected after checks, inspect/repair harness, check ECU grounds and supply voltages, and consult technical service information for ECU-level diagnostics or reprogramming.

Likely causes

  • Worn or partially clogged injector nozzle on cylinder 3
  • Corroded or damaged injector connector or wiring (intermittent contact or high resistance)
  • Injector control driver or solenoid beginning to fail
  • Fuel rail pressure sensor or high-pressure pump fault causing abnormal injection demands
  • Injector hydraulic leak (internal bleed) causing increased injector displacement demand

Fault status

⚠️ Status
MIL set. ECU reports cylinder 3 injector adaptation/displacement has reached maximum learn limit — software compensation exhausted. Driving performance may be degraded; further diagnosis required to determine whether injector, fuel supply, wiring, or engine condition is root cause.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 2.0-4.0 hours

Similar codes

P02D0 P02D2 P0203 P0200 P0303
359

Browse 359 LAND ROVER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

LAND ROVER

Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email

Report

Harassment or bullying behavior
Contains mature or sensitive content
Contains misleading or false information
Contains abusive or derogatory content
Contains spam, fake content or potential malware

Block Member?

Please confirm you want to block this member.

You will no longer be able to:

  • See blocked member's posts
  • Mention this member in posts
  • Invite this member to groups
  • Message this member
  • Add this member as a connection

Please note: This action will also remove this member from your connections and send a report to the site admin. Please allow a few minutes for this process to complete.

Report

You have already reported this .