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Home / DTC / P020C — Cylinder 3 injection timing

P020C — Cylinder 3 injection timing

Detailed page for trouble code P020C.

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Code

P020C

LAND ROVER P — Powertrain

Cylinder 3 injection timing

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

Causes

  • Faulty or sticking fuel injector (cylinder 3)
  • Open, shorted, or corroded injector wiring or connector
  • Poor ECU/PCM driver output or internal injector driver failure
  • Incorrect camshaft–crankshaft timing (timing chain/belt/skew)
  • Faulty camshaft or crankshaft position sensor or signal correlation
  • Low or unstable fuel rail/high-pressure pump problems

Symptoms

  • Malfunction Indicator Lamp (MIL) illuminated
  • Rough idle or misfire focused on cylinder 3
  • Reduced engine power or hesitation during acceleration
  • Increased fuel consumption and visible smoke (diesel)
  • Hard starting or extended cranking
  • Possible vibration under load or cylinder-specific knock

What to check

  • Read freeze-frame and live data with a capable scanner to confirm conditions when the code set
  • Visual inspection of injector harness, connector, pins and engine grounds for damage or corrosion
  • Check battery and charging system voltage during cranking and running
  • Measure injector electrical resistance and compare to manufacturer specification
  • Backprobe injector signal with an oscilloscope to view pulse shape, timing and current profile
  • Check fuel rail pressure and high-pressure pump operation against spec

Signal parameters

  • Injector pulse width (ms) — varies with load; compare live data to expected value
  • Injector drive voltage (approx. battery voltage when saturated) and switching waveform
  • Injector driver current or current ramp (amperage) and waveform shape
  • Injector coil/solenoid resistance (ohms) — compare to spec
  • Fuel rail pressure (bar / psi) during cranking and at idle/load
  • Camshaft vs crankshaft correlation angle (degrees) from live data

Diagnostic algorithm

  1. Retrieve DTCs and freeze-frame data; record operating conditions when P020C set. Clear codes and road test to see if code returns.
  2. Visual inspection: check connector at cylinder 3 injector, harness chafing, pin corrosion, and engine/ECM grounds. Repair any damage.
  3. Check battery/charging voltage; low voltage can affect injector driver operation.
  4. Measure injector resistance at the connector (engine off) and compare to spec. Note: diesel direct injectors typically have low resistance; consult service data.
  5. Backprobe the injector while cranking/running and use an oscilloscope to view the injector drive waveform and timing; compare to a known-good cylinder or manufacturer reference.
  6. Check fuel rail pressure and high-pressure pump; ensure pressure is within spec and stable under load.
  7. Verify camshaft and crankshaft position sensor signals and correlation. Look for cam/crank timing faults (use scope or diagnostic tool). Repair timing chain/belt or sensors if correlation is off.
  8. Swap the injector from cylinder 3 with another cylinder (if accessible and safe) to see if fault follows the injector — perform only if safe and following fuel system depressurization procedures.
  9. If wiring and injector test good but fault persists, suspect ECM/driver failure. Check for technical bulletins or software updates before replacement. Replace ECM only after confirming all wiring, sensors and injectors are good.
  10. Safety note: when working on high-pressure fuel systems, follow manufacturer procedures for fuel pressure relief and observe proper PPE.

Likely causes

  • Damaged connector or pin corrosion at cylinder 3 injector
  • Injector electrical failure (open/short or high resistance)
  • ECM injector driver fault or worn solder joint
  • Timing chain/slacker or jumped tooth causing cam/crank correlation error
  • Contaminated or mechanically sticking injector affecting timing
  • Faulty cam/crank sensor producing incorrect timing reference

Fault status

⚠️ Status
P020C — Cylinder 3 injection timing fault. ECM detected injector timing/control outside expected parameters or a fault in the injector control circuit for cylinder 3. MIL illuminated; related drivability symptoms may be present.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.5 hours
413

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