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Home / DTC / P02D3 — Cylinder 4 Fuel Injector A Offset Learning At Max Limit

P02D3 — Cylinder 4 Fuel Injector A Offset Learning At Max Limit

Detailed page for trouble code P02D3.

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P02D3

Generic P — Powertrain

Cylinder 4 Fuel Injector A Offset Learning At Max Limit

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

Causes

  • Fuel injector (cylinder 4) flow or response out of specification (sticking, clogged, leaking, worn)
  • Injector electrical fault (open, short, high resistance, poor connection)
  • Damaged or corroded injector connector or wiring harness
  • Incorrect injector installed or injector calibration mismatch
  • Low or erratic fuel rail pressure or fuel supply issue
  • PCM/ECM software, calibration or internal fault

Symptoms

  • Malfunction Indicator Lamp (MIL) illuminated
  • Rough idle or vibration at idle
  • Misfire or cylinder 4-specific misfire (codes like P0304 may also be present)
  • Reduced engine power, hesitation or drivability loss
  • Higher-than-normal fuel consumption or black exhaust smoke
  • Hard starting or poor cold start performance

What to check

  • Read freeze frame and all stored codes; note engine conditions when fault set
  • Check live data: injector adaptation/offset values for all cylinders and compare cylinder 4
  • Verify fuel rail/system pressure and stability (static and dynamic)
  • Measure injector electrical resistance and compare to specification
  • Inspect injector 4 connector and wiring for corrosion, damage, loose pins, or shorts
  • Perform a cylinder balance or cylinder cut-out test to confirm injector contribution

Signal parameters

  • Injector electrical resistance (Ohms)
  • Injector pulse width (ms) from PCM
  • Short-term and long-term fuel trim (STFT/ LTFT) per bank
  • Injector offset/adaptation value (manufacturer units or microseconds)
  • Fuel rail pressure (psi or kPa)
  • Battery voltage (V)

Diagnostic algorithm

  1. Retrieve DTC, freeze-frame, and live data. Confirm P02D3 presence and note adaptation value for cylinder 4 vs others.
  2. Clear codes and attempt to reproduce with monitored data. Watch adaptation value and injector parameters while driving or under load.
  3. Visually inspect injector 4 wiring and connector. Repair any damage, corrosion, or poor connections.
  4. Measure injector 4 resistance and compare to factory spec and to other injectors. If out of spec, replace injector.
  5. Use a noid light or oscilloscope to confirm injector drive pulse from PCM and waveform integrity.
  6. Perform an injector balance/flow test (or swap injector 4 with a known good injector) to see if the offset fault follows the injector.
  7. Check fuel rail pressure and regulator operation under static and dynamic conditions. Repair fuel delivery faults as needed.
  8. Perform compression or leak-down test on cylinder 4 to rule out mechanical issues causing excessive adaptive correction.
  9. If wiring and injector test good and mechanicals OK, consider PCM software update or PCM internal fault; consult manufacturer technical service information.
  10. After repair or replacement, clear codes and verify adaptation values return to normal and that MIL does not return during test drive.

Likely causes

  • Injector on cylinder 4 is sticking, clogged, or leaking (most common)
  • Wiring or connector fault to injector 4 (intermittent open, short to ground/voltage)
  • Fuel rail pressure abnormal or regulator failure causing abnormal injector correction
  • PCM adaptation limit reached due to persistent misfire or mechanical cylinder problem
  • Incorrect replacement injector or ECU calibration mismatch

Fault status

⚠️ Status
Cylinder 4 Fuel Injector A Offset Learning At Max Limit — PCM reached maximum adaptive correction for injector on cylinder 4, indicating injector performance or related system out of expected range.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.5-3.0 hours

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Code

P02D3

LAND ROVER P — Powertrain

Cylinder 4 - Fuel injector compensation learning on maximum limit

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

Causes

  • Fuel injector (cylinder 4) flow or response out of specification (sticking, clogged, leaking, worn)
  • Injector electrical fault (open, short, high resistance, poor connection)
  • Damaged or corroded injector connector or wiring harness
  • Incorrect injector installed or injector calibration mismatch
  • Low or erratic fuel rail pressure or fuel supply issue
  • PCM/ECM software, calibration or internal fault

Symptoms

  • Malfunction Indicator Lamp (MIL) illuminated
  • Rough idle or vibration at idle
  • Misfire or cylinder 4-specific misfire (codes like P0304 may also be present)
  • Reduced engine power, hesitation or drivability loss
  • Higher-than-normal fuel consumption or black exhaust smoke
  • Hard starting or poor cold start performance

What to check

  • Read freeze frame and all stored codes; note engine conditions when fault set
  • Check live data: injector adaptation/offset values for all cylinders and compare cylinder 4
  • Verify fuel rail/system pressure and stability (static and dynamic)
  • Measure injector electrical resistance and compare to specification
  • Inspect injector 4 connector and wiring for corrosion, damage, loose pins, or shorts
  • Perform a cylinder balance or cylinder cut-out test to confirm injector contribution

Signal parameters

  • Injector electrical resistance (Ohms)
  • Injector pulse width (ms) from PCM
  • Short-term and long-term fuel trim (STFT/ LTFT) per bank
  • Injector offset/adaptation value (manufacturer units or microseconds)
  • Fuel rail pressure (psi or kPa)
  • Battery voltage (V)

Diagnostic algorithm

  1. Retrieve DTC, freeze-frame, and live data. Confirm P02D3 presence and note adaptation value for cylinder 4 vs others.
  2. Clear codes and attempt to reproduce with monitored data. Watch adaptation value and injector parameters while driving or under load.
  3. Visually inspect injector 4 wiring and connector. Repair any damage, corrosion, or poor connections.
  4. Measure injector 4 resistance and compare to factory spec and to other injectors. If out of spec, replace injector.
  5. Use a noid light or oscilloscope to confirm injector drive pulse from PCM and waveform integrity.
  6. Perform an injector balance/flow test (or swap injector 4 with a known good injector) to see if the offset fault follows the injector.
  7. Check fuel rail pressure and regulator operation under static and dynamic conditions. Repair fuel delivery faults as needed.
  8. Perform compression or leak-down test on cylinder 4 to rule out mechanical issues causing excessive adaptive correction.
  9. If wiring and injector test good and mechanicals OK, consider PCM software update or PCM internal fault; consult manufacturer technical service information.
  10. After repair or replacement, clear codes and verify adaptation values return to normal and that MIL does not return during test drive.

Likely causes

  • Injector on cylinder 4 is sticking, clogged, or leaking (most common)
  • Wiring or connector fault to injector 4 (intermittent open, short to ground/voltage)
  • Fuel rail pressure abnormal or regulator failure causing abnormal injector correction
  • PCM adaptation limit reached due to persistent misfire or mechanical cylinder problem
  • Incorrect replacement injector or ECU calibration mismatch

Fault status

⚠️ Status
Cylinder 4 Fuel Injector A Offset Learning At Max Limit — PCM reached maximum adaptive correction for injector on cylinder 4, indicating injector performance or related system out of expected range.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.5-3.0 hours

Similar codes

P0204 P0200 P0304 P0171 P0191
320

Browse 320 LAND ROVER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

LAND ROVER

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