P0C01

Code

LAND ROVER P — Powertrain

Transfer case motor A - High current

Brand: LAND ROVER

Type: P — Powertrain

Views: UK: 21 EN: 51 RU: 24

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Short to battery (B+) on motor power feed or harness
Motor internal fault (worn brushes, shorted windings, commutator failure)
Mechanical binding or seized transfer case actuator gears
Corroded/loose connector or poor ground causing high current/voltage drop
Water ingress or contamination in motor or connector
Faulty motor driver or control module output stage

Symptoms

4WD/drive mode change unavailable or stuck in one mode
Warning lamp or message (transfer case fault, 4x4 fault, malfunction indicator)
Unusual noise from transfer case actuator (grinding or stalling)
Intermittent operation or failure to engage transfer case
Possible fuse blow or repeated fault codes stored

What to check

Read freeze frame and live data with a suitable scan tool (status, commanded position, current/duty cycle if available)
Visual inspection of motor connector, pins, wiring harness and transfer case for damage or corrosion
Check for water, debris or mechanical damage at actuator and transfer case linkage
Check supply voltage and ground at the motor connector while commanding the actuator
Measure motor current draw with an inline ammeter or clamp meter during operation
Measure motor coil resistance with battery disconnected

Signal parameters

Supply voltage at motor when commanded: ~11–14.5 V (vehicle battery voltage under load)
Typical running current: roughly 1–7 A (varies by model); values above this during normal movement may indicate a fault
Stall current: commonly >10 A — sustained high current above expected running range triggers DTC
Motor coil resistance (cold, disconnected): typically low ohms (approx. 0.5–5 Ω) — compare to OE spec
Control signal: PWM duty 0–100% (frequency depends on module design)
Note: use OEM service data for exact expected values for the specific Land Rover model

Diagnostic algorithm

Retrieve DTC(s) and freeze frame with scan tool. Note operating conditions when fault set.
Perform visual inspection of connector, wiring and transfer case actuator for damage, corrosion or water ingress.
Clear code and attempt transfer case operation while monitoring live data (motor command, position, current/duty if available).
With ignition on and motor commanded, measure voltage at the motor power and ground terminals; verify battery voltage reaches the motor.
Measure current draw using a DC clamp meter or inline ammeter during a commanded operation. Compare to expected/range — high sustained current indicates motor/harness or mechanical bind.
With battery disconnected, measure motor coil resistance and inspect for shorts to ground or B+. Compare to OE values.
If high current persists and wiring/voltage are good, remove motor/actuator and attempt bench test to confirm internal motor fault or mechanical binding.
Inspect transfer case actuator gears and linkage for damage or foreign objects that could cause increased torque.
Repair or replace damaged wiring, connectors, or motor as required. Re-test operation and clear codes.
If wiring and motor bench test OK, diagnose motor driver/output in PCM/TCU per OEM procedures (this may require module bench testing or replacement).

Likely causes

Motor is partially seized or binding in transfer case (mechanical load increases current)
Shorted or internally damaged motor (brushes/armature)
Damaged or chafed harness causing short to B+ when motor is commanded
Corroded connector/poor ground increasing current draw
Faulty transfer case motor driver in PCM/TCU (less common)

Fault status

⚠️ Status

Control module detected excessive current draw from Transfer Case Motor A — possible short, motor stall, or wiring fault.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.5-3.0 hours

Similar codes

Repair manuals

Manual library for LAND ROVER

413

Browse 413 LAND ROVER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

LAND ROVER

Your experience will help others

+100 karma for a short comment :)

Was this AI description helpful?

Your feedback helps improve AI descriptions.

👍 Like 0 👎 Dislike 0

Send to email

P0C01 — Transfer case motor A - High current