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Home / DTC / P02D2 — Cylinder 4 - Fuel injector compensation learning minimum limit

P02D2 — Cylinder 4 - Fuel injector compensation learning minimum limit

Detailed page for trouble code P02D2.

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P02D2

LAND ROVER P — Powertrain

Cylinder 4 - Fuel injector compensation learning minimum limit

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

Causes

  • Clogged or partially blocked fuel injector (cylinder 4)
  • Injector stuck open or leaking internally
  • Electrical fault in injector circuit (short to ground, open, high resistance)
  • Poor connector or wiring to injector (intermittent/poor ground)
  • Low fuel rail pressure or fuel delivery problem
  • Low compression or internal engine leak on cylinder 4

Symptoms

  • Malfunction Indicator Lamp (MIL) illuminated
  • Rough idle or vibration attributable to cylinder 4
  • Reduced engine power, hesitation or poor drivability
  • Elevated fuel consumption or failed emissions test
  • Possible misfire code for cylinder 4 (P0304) or unbalanced cylinder contribution values

What to check

  • Read and record all stored DTCs and freeze frame data
  • Check live data: injector pulse width for cylinder 4, short/long term fuel trims, cylinder contribution and misfire counters
  • Inspect injector connector and wiring for damage, corrosion or poor pin contact
  • Measure injector resistance (ohms) and compare to specification
  • Verify fuel rail pressure and regulator function under load
  • Perform compression or leak-down test on cylinder 4

Signal parameters

  • Injector pulse width (ms) for cylinder 4
  • Injector current (mA) if applicable (solenoid or piezo drive)
  • Injector resistance (ohms)
  • Fuel rail pressure (bar/psi)
  • Short-term and long-term fuel trim (%)
  • Cylinder contribution / balance values

Diagnostic algorithm

  1. Retrieve DTCs and freeze-frame; note conditions when fault set.
  2. Monitor live data with scan tool: compare cylinder 4 injector pulse width and contribution to other cylinders during idle and under load.
  3. Visually inspect injector 4 connector and wiring; repair any damaged pins, corrosion or poor grounds.
  4. Measure injector 4 resistance; if out of specification, replace injector.
  5. Perform a noid/light test or use an oscilloscope to confirm injector drive signal from PCM.
  6. Swap injector 4 with another cylinder; if code follows injector, replace injector. If it remains on cylinder 4, continue mechanical/electrical checks.
  7. Check fuel rail pressure and flow. Replace fuel filter or test pump if pressure is low or fluctuating.
  8. Perform compression or leak-down test on cylinder 4 to rule out mechanical issues affecting fuel compensation.
  9. If injector tests good and wiring/pressure/compression are OK, check PCM grounds and power; consider PCM fault if evidence indicates.
  10. After repair or replacement, clear codes, perform injector adaptation/learning procedure if required by manufacturer, and road-test to confirm repair.

Likely causes

  • Injector hydraulic issue on cylinder 4 (clogged, leaking or stuck)
  • Injector wiring/connector fault (corrosion, high resistance, intermittent)
  • Low fuel pressure or failing fuel pump/fuel filter reducing effective injector flow
  • Cylinder mechanical problem (low compression/valve sealing)

Fault status

⚠️ Status
ECU reports cylinder 4 injector compensation has reached the minimum learning limit — injector delivery cannot be reduced further to meet target, indicating a fault in injector, fuel delivery, wiring, or cylinder condition.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0 - 3.5 hours

Similar codes

P0204 P0264 P0304 P0171 P0174
413

Browse 413 LAND ROVER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

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