P020E

Code

LAND ROVER P — Powertrain

Cylinder 5 injection timing

Brand: LAND ROVER

Type: P — Powertrain

Views: UK: 10 EN: 24 RU: 13

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Page language: EN

Causes

Open or short in injector 5 control wiring or connector
Faulty cylinder 5 fuel injector (sticking, hydraulically or electrically failed)
Faulty injector driver or output transistor in the engine control module (ECM)
Low or erratic fuel pressure or contaminated fuel affecting injector timing
Incorrect camshaft/crankshaft timing or failed camshaft phaser/actuator
Poor electrical ground or battery supply voltage issues

Symptoms

Malfunction Indicator Lamp (MIL) or engine warning light on
Rough idle, hesitation or surging under load
Reduced power and poor acceleration
Increased fuel consumption and visible smoke (diesel engines)
Engine misfire or vibration localized to cylinder 5
Difficulty starting or intermittent stalling

What to check

Read and record freeze frame data and all stored DTCs with a calibrated scan tool
Check live data: injector pulse width/frequency for cylinder 5 and compare with other cylinders
Inspect wiring harness and connector for cylinder 5 for corrosion, bent pins, damage, or oil/fuel contamination
Backprobe injector connector while cranking/running to verify supply voltage and control pulse (use a scope if available)
Measure injector coil resistance and compare to spec (consult factory data)
Check fuel rail pressure and regulation under static and dynamic conditions

Signal parameters

Injector supply voltage ≈ battery voltage (approximately 12V) on the power feed circuit (key on) — verify with factory spec
Injector control is a switched ground or switched positive pulse — control pulses typically vary from
Injector coil resistance varies by injector type; common ranges: low-impedance injectors ~1–3 Ω, high-impedance ~10–20 Ω — use factory-specified resistance
Control pulse waveform should show a clean, repeatable square wave when viewed with an oscilloscope; missing or clipped pulses indicate driver or wiring issues
Fuel rail pressure and timing depend on engine type — verify against Land Rover specified rails and ranges

Diagnostic algorithm

Connect an advanced scan tool and record freeze frame data, pending DTCs, and live injector parameters for cylinder 5. Note correlated codes (cam/crank, fuel pressure).
Visually inspect injector 5 harness and connector for damage, corrosion, oil ingress, or loose pins. Repair or clean as needed.
With ignition on, verify injector power feed at the connector (battery voltage on the supply terminal).
Crank or run the engine and backprobe the injector control terminal. Use an oscilloscope or high-quality lab scope to confirm presence, shape and timing of control pulses; compare with a working cylinder.
Measure injector coil resistance (cold) and compare to factory specification. If out of range, replace injector.
Perform a swap test: swap injector 5 with another cylinder (if safe and practical) and clear codes. If the fault moves to the swapped cylinder, suspect the injector. If it remains on cylinder 5, suspect wiring/ECM.
Check fuel rail pressure and operation of the fuel pump and pressure regulator. Low or fluctuating pressure can affect injection timing.
Verify camshaft and crankshaft sensor signals and timing (check for cam phaser problems). Correct mechanical timing issues before replacing components.
If wiring, connector and injector bench tests are good, inspect ECM injector driver outputs and internal grounds. Replace or reprogram ECM only after confirming external circuits are good.
After repairs, clear codes and test drive under conditions that previously produced the fault; re-scan to confirm the code does not return.

Likely causes

Faulty injector #5
Open/shorted injector harness or poor connector pin contact at cylinder 5
Failed injector driver inside ECM
Low fuel rail pressure or failing fuel system components
Camshaft timing/phaser fault causing incorrect injection timing

Fault status

⚠️ Status

P020E — Cylinder 5 injection timing/control fault detected. Possible injector, wiring, timing, fuel supply or ECM driver issue. Further diagnosis required.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1-3 hours

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