C1009

Code

LAND ROVER C — Chassis

Power step - Right position / motion sensor

Brand: LAND ROVER

Type: C — Chassis

Views: UK: 14 EN: 22 RU: 15

AI status

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Page language: EN

Causes

Faulty right power step position or motion sensor
Damaged or corroded wiring harness or connector (power, ground, signal)
Poor ground or intermittent supply voltage to the sensor
Mechanical binding, debris or obstruction preventing normal step movement
Failed step actuator/motor drawing unusual current and causing sensor errors
Faulty body control module (BCM) or power step control module

Symptoms

Right power step fails to extend or retract
Right step moves intermittently or stops partway
Vehicle displays power step warning message or MIL related to steps
Audible motor noise without movement or erratic step operation
One side behaves differently from the other (asymmetrical operation)

What to check

Scan vehicle for C1009 and any related stored codes; note freeze frame data
Visually inspect right power step, mounting, and pivot for debris or binding
Inspect wiring and connector at the right step sensor and actuator for corrosion, damage or water ingress
Check connector mating and pins for bent/corroded terminals; reseat connector
Operate power step using a diagnostic tool and observe live data for sensor values and step position
Backprobe sensor harness to verify 5V reference (or specified supply), ground continuity and signal change during movement

Signal parameters

Position sensor typically returns an analog signal 0–5 V (varies with travel). Expect change in voltage as step moves.
Reference supply: ~5 V from control module; sensor ground near 0 V. Verify presence while ignition ON.
Retracted/parked signal commonly low (~0.5–1.5 V) and extended signal higher (~3.5–4.5 V) — values are approximate; consult vehicle data for exact ranges.
Motion sensor (if digital) may provide a pulse or switched signal; frequency or duty cycle should change with movement.
No signal or fixed out‑of‑range voltage indicates open/shorted sensor or wiring fault.

Diagnostic algorithm

Read and record all stored codes and live data with a capable diagnostic scanner; clear codes and attempt to re-create the fault.
Visually inspect the right power step assembly for physical obstruction, damage, corrosion, or foreign objects preventing travel.
With ignition ON and step idle, backprobe the sensor connector: verify 5 V reference (or specified supply), ground continuity, and signal voltage. Compare to expected ranges.
Command the right step extend/retract from a diagnostic tool while monitoring the sensor signal. Confirm the signal changes smoothly with movement (no dropouts or jumps).
Perform a wiggle test on the harness and connector while commanding the step to operate to identify intermittent wiring faults.
If wiring and connector are good but signal is abnormal, remove and inspect the sensor for damage; measure sensor resistance if applicable and compare to specification.
Measure motor current during operation. High current suggests binding or mechanical failure; resolve mechanical issue before replacing sensors or modules.
If sensor replacement is required, replace the right position/motion sensor and retest. If codes persist, inspect/replace wiring or control module as indicated.
After repair, clear codes, perform any required calibration/learning procedure for the power step, and confirm correct operation over several cycles.

Likely causes

Wiring/connector damage or corrosion to the right step sensor (most common)
Failed/right position or motion sensor
Mechanical obstruction/binding of the right step
Faulty actuator causing abnormal sensor readings
Control module fault or lost communication (less common)

Fault status

⚠️ Status

Right Power Step Position/Motion Sensor fault detected. Check right step for obstruction, wiring/connectors, sensor supply and signal. Perform diagnostic tests before attempting repair.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.0-2.5 hours

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C1009 — Power step - Right position / motion sensor