P0269

Code

LAND ROVER P — Powertrain

cylinder 3 contribution / balance

Brand: LAND ROVER

Type: P — Powertrain

Views: UK: 24 EN: 66 RU: 54

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Page language: EN

Causes

Faulty or clogged fuel injector on cylinder 3
Injector electrical fault (open/short, poor connector, damaged wiring)
Low compression or mechanical issue in cylinder 3 (worn rings, valve leak)
Low or unstable fuel rail pressure or supply feed problems
Intake or vacuum leak affecting cylinder 3 air charge
EGR/clogging or turbo/boost fault causing uneven cylinder fill

Symptoms

Malfunction indicator lamp (MIL) illuminated
Rough idle or vibration at idle
Noticeable misfire or stumbling under load
Reduced engine power and drivability
Increased fuel consumption
Visible exhaust smoke (black or white depending on fault)

What to check

Read and record all stored codes, pending codes and freeze-frame data
Check for related misfire codes (e.g. P0303) and injector circuit codes (e.g. P0203)
Visual inspection of injector 3 connector, wiring harness and ground points for damage, corrosion or loose pins
Monitor live data: cylinder contribution/trims, misfire counters, injector pulse/command, fuel rail pressure, boost pressure, MAF/MAP values
Check fuel filter condition and fuel pressure at the rail with a gauge
Perform a cylinder compression or leak-down test on cylinder 3 and compare to others

Signal parameters

Injector command pulse width and frequency (ms) for cylinder 3
Injector current or duty if applicable (mA/% duty)
Cylinder contribution or balance values / trim for cylinder 3
Misfire counter for cylinder 3
Fuel rail pressure (bar or psi) and fuel pump control status
MAF/MAP sensor readings and intake manifold pressure/boost

Diagnostic algorithm

Retrieve all codes and freeze-frame data; note engine load, RPM, coolant temp and fuel rail pressure at fault occurrence.
Visually inspect injector 3 wiring, connector and ground. Repair any corrosion, damage or loose connections.
Check fuel system: inspect filter, measure fuel rail pressure under key-on and during cranking/running; repair supply issues.
Use a scan tool to monitor cylinder contribution/trims and misfire counters. Clear codes and attempt to reproduce.
Swap injector 3 with a known-good injector from another cylinder and re-run: if code follows injector, replace injector.
If code remains on cylinder 3 after swap, perform compression and/or leak-down test on cylinder 3 and compare to other cylinders. Repair mechanical issues if found.
Inspect intake manifold, vacuum lines and EGR for leaks or restrictions that could affect cylinder 3; correct as needed.
If electrical faults suspected, back-probe connector to check command voltage/current to injector and continuity to PCM; repair harness or connector faults.
Reprogram/update PCM software if manufacturer bulletin applies and no hardware fault found.
After repair, clear codes, road-test and re-scan to confirm repair; repeat diagnostics if the code returns.

Likely causes

Injector failure (most common) — mechanical nozzle fault or internal seizure
Injector circuit wiring/connector problem causing intermittent control
Cylinder 3 low compression or leaking valve
Fuel supply pressure low or inconsistent (rail pump, regulator, filter)
Intake leak or EGR causing uneven air for cylinder 3

Fault status

⚠️ Status

PCM stored DTC P0269 — Cylinder 3 contribution/balance. MIL illuminated. Further diagnostics required to identify root cause.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.0-3.0 hours

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P0269 — cylinder 3 contribution / balance