C1095

Code

LAND ROVER C — Chassis

Motor pump circuit failure

Brand: LAND ROVER

Type: C — Chassis

Views: UK: 28 EN: 44 RU: 32

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Page language: EN

Causes

Open or short in pump motor power supply or ground
Blown fuse or faulty pump relay
Corroded or damaged connector pins at the pump or module
Failed pump motor (electrical winding short or open) or seized mechanical internals
High resistance in wiring (poor crimp/joint) causing voltage drop
Faulty pump driver or ABS/traction control module

Symptoms

ABS, DSC/ESP or traction control warning lamp illuminated
Brake assist or ABS function reduced or disabled
Audible pump motor not running when system requests it (or running continuously)
Brake pedal feel may be firmer or less responsive under ABS events
Stored related fault codes and possible dashboard message
Possible longer stopping distances during emergency braking

What to check

Read all stored and pending DTCs and freeze-frame data with a scan tool
Verify battery voltage and charging system health (good battery, >12.4V at rest)
Visually inspect pump, harness, connectors, fuses and relays for damage or corrosion
Check fuse(s) and relay(s) for the pump circuit and swap/test relay if applicable
Back-probe pump connector: measure supply voltage, ground continuity and signal when activated
Measure pump motor resistance and compare to specification or a similar known-good motor

Signal parameters

Supply voltage at pump power pin: near battery voltage with ignition ON (approx. 11.5–14.5 V depending on charging state)
Control signal: on some systems a switched 12V feed or PWM duty-cycle control from ABS module
Motor winding resistance: low ohms range (typical small DC motor values; large open/very high resistance indicates open winding)
Motor current draw: brief higher inrush current then steady running current; excessive continuous current indicates mechanical bind or internal short
Ground continuity: near 0 Ω (low resistance) between pump ground pin and chassis

Diagnostic algorithm

Retrieve and record all DTCs and freeze-frame data; note when the fault set (conditions).
Verify battery voltage and charge. Recharge or replace weak battery before further testing.
Perform a visual inspection of the pump, harness, connectors, fuses and relays for damage, corrosion or water intrusion.
Check relevant fuses and swap or bench-test relay(s) associated with the pump circuit.
Back-probe the pump connector with ignition ON and request pump run via scan tool: confirm battery voltage at supply pin and solid ground at ground pin.
If supply or ground is missing, trace wiring back to fuse/relay/module and repair open/short/poor connection.
If voltage/ground present but pump does not run, measure motor winding resistance. An open or infinite reading indicates a failed motor.
Measure motor current while commanding pump on. Compare inrush and running current to expected behavior; high current or stall indicates mechanical seizure or internal short.
If motor tests indicate failure, disconnect harness and bench-test pump directly from a fused 12V supply to confirm behavior before replacing.
If pump and wiring test good, suspect pump driver or ABS module. Check for communication errors and related module codes; consider module bench/repair or replacement per manufacturer guidance.
After repairs, clear codes and perform a drive/activation cycle to confirm the fault does not return.

Likely causes

No battery voltage present at pump power pin (open feed or blown fuse)
Poor ground at pump motor causing high resistance or intermittent operation
Pump motor draws excessive current (internal short) or no current (open winding)
Connector corrosion or bent/broken pins at pump harness
Failed pump motor relay or internal driver in the ABS/control module
Mechanical seizure of pump preventing motor rotation and causing overcurrent

Fault status

⚠️ Status

C1095 — Motor/pump circuit failure detected. The control module has detected an electrical problem in the pump motor circuit (open, short, high resistance, or no current draw). Investigation of power, ground, wiring, connectors, pump motor and controlling module required.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.5-3.0 hours

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C1095 — Motor pump circuit failure