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Home / DTC / C0019 — Left rear output control

C0019 — Left rear output control

Detailed page for trouble code C0019.

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Code

C0019

LAND ROVER C — Chassis

Left rear output control

Brand: LAND ROVER
Type: C — Chassis
Views: UK: 4 EN: 11 RU: 5
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Page language: EN

Causes

  • Open circuit or broken wire in left‑rear output harness
  • Corroded, loose or damaged connector/pins at the actuator or module
  • Short to ground or short to battery on the output circuit
  • Failed left‑rear actuator (solenoid, motor, valve) or high internal resistance
  • Faulty ABS/traction/stability control module output driver
  • Blown fuse or interrupted power/ground supply

Symptoms

  • ABS/ESP/traction warning lamp illuminated
  • Reduced or no operation of left‑rear controlled function (brake solenoid, suspension actuator or related item)
  • Vehicle stability or braking‑assist functions limited or disabled
  • Related fault codes present for other wheel outputs or sensors
  • Intermittent operation or faults that change with road/temperature conditions

What to check

  • Read all stored and pending DTCs and freeze‑frame data with a capable scan tool
  • Visually inspect left‑rear actuator, connector, and harness for damage, corrosion, or water
  • Check fuses and power/ground supply circuits for the control module
  • Wiggle test harness while monitoring live data or the fault status for intermittent changes
  • Backprobe the actuator connector while commanding the output with a scan tool
  • Measure continuity and resistance of the output circuit between module and actuator

Signal parameters

  • Inactive output: near 0 V or low voltage on the switched output (depends on design)
  • Activated output: near battery voltage (~11–14 V) or a PWM signal; some outputs are pulsed rather than steady
  • Actuator resistance: varies by device; typical DC solenoids/motors may read from ~1 Ω to tens of ohms — check manufacturer spec
  • Expected current draw: depends on actuator (low A for small valves, higher for motors) — abnormal high or zero current indicates fault
  • If PWM, frequency may be tens to hundreds of Hz; amplitude should swing toward battery voltage when commanded

Diagnostic algorithm

  1. Use a scan tool to confirm C0019 and record any related codes and freeze frame data; clear codes and perform a test drive to re‑create if needed.
  2. Visually inspect the left‑rear actuator, connector and wiring for damage, corrosion, moisture or loose pins; repair any visible issues.
  3. Verify module power and ground circuits and check related fuses and relays.
  4. With ignition on and using a scan tool, command the left‑rear output (if supported) while backprobing the actuator connector. Observe voltage/current and compare to expected behavior.
  5. Measure continuity and resistance between the control module connector pin and the actuator pin. Check for short to ground and short to battery.
  6. If waveform is required, use a lab scope to view the output while commanding it; look for PWM duty changes, missing pulses, or clipped signals.
  7. If actuator does not respond electrically but wiring is good, bench‑test the actuator (apply proper voltage/current per service manual) to verify operation. Replace actuator if it fails.
  8. If actuator and wiring check good but fault remains, suspect module output driver failure — verify by comparing with another output channel or substitute known‑good module if available.
  9. After repairs, clear codes and verify proper function with road test and re‑scan for reoccurrence.

Likely causes

  • Damaged connector or corroded pins at left‑rear actuator
  • Open or short in harness between module and actuator
  • Failed actuator (stuck or electrically open/shorted)
  • Control module output driver fault (less common)

Fault status

⚠️ Status
C0019 - Left Rear Output Control
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5 - 2.0 hours

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