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Home / DTC / C1427 — Right rear shock absorber - open circuit

C1427 — Right rear shock absorber - open circuit

Detailed page for trouble code C1427.

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C1427

LAND ROVER C — Chassis

Right rear shock absorber - open circuit

Brand: LAND ROVER
Type: C — Chassis
Views: UK: 7 EN: 8 RU: 4
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Page language: EN

Causes

  • Broken or disconnected wiring to the right rear shock absorber
  • Corroded or damaged connector at the shock absorber
  • Failed right rear shock absorber (internal open sensor/coil)
  • Poor or missing ground or power supply to the damper
  • Faulty suspension control module or internal driver fault
  • Blown fuse or related power distribution fault

Symptoms

  • Suspension/warning lamp or message in the instrument cluster
  • Reduced or lost damping control on the right rear corner
  • Uneven ride, increased bounce or harshness at rear right
  • Vehicle may default to a safe mode or show lowered functionality
  • Other suspension-related codes or traction/ESC intervention

What to check

  • Connect a diagnostic scan tool, read freeze frame and live data for damper status
  • Visually inspect right rear shock connector, pins and wiring for damage or corrosion
  • Check fuses and power distribution related to suspension control
  • Backprobe the shock absorber connector with ignition ON and measure supply, signal and ground
  • Measure continuity/resistance of wiring between connector and suspension control module
  • Wiggle test harness while monitoring live data to reproduce the fault

Signal parameters

  • Open-circuit condition: infinite resistance (OL) between signal pin and module — indicates open
  • Expected supply voltage: depends on vehicle — typically a switched 12 V or 5 V reference; confirm with manufacturer data
  • Expected signal range: many damper sensors use 0–5 V or variable resistance; valid value should be present on live data — absence indicates open
  • Typical coil/actuator resistance varies by design; measure and compare to new unit specification (if unknown, an open/OL is definitive)
  • Ground continuity: low ohms (

Diagnostic algorithm

  1. Use a scan tool to confirm C1427 and check for related codes (left/right or front damper codes). Record live data for right rear damper.
  2. Visually inspect the right rear damper connector, wiring harness, and nearby body/chassis for chafing, pinch points, corrosion or a disconnected connector.
  3. With ignition ON (engine off), backprobe the damper connector: verify reference/supply voltage, signal voltage and ground. If supply or ground missing, trace back to fuse/relay/module.
  4. Measure continuity between the damper connector pins and the suspension control module pins. An open indicates wiring/connector fault. Repair wiring or connector as required.
  5. If wiring/connector are good, disconnect damper and measure the damper’s internal resistance per manufacturer spec. An open (OL) indicates a failed damper — replace the damper assembly.
  6. If damper and wiring are good but signal absent, test the suspension control module output/driver. Check fuses, relays and module grounds. Replace or reprogram module only after confirming upstream wiring and component integrity.
  7. After any repair or component replacement, clear codes, perform required suspension initialization/calibration (if applicable) and road test to confirm repair. Re-scan for codes.

Likely causes

  • Damaged wiring harness or connector at right rear shock (common)
  • Corroded terminal or pin push-out in connector
  • Failed shock absorber assembly (internal open)
  • Faulty ground or supply feed to the shock module
  • Rare: control module output driver failed

Fault status

⚠️ Status
Right rear shock absorber circuit open — suspension control unable to monitor/control right rear damper. Fault stored; driving comfort and suspension performance may be reduced.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-2.5 hours

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C1426 C1428 C1430 C1400
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