U1041

Code

LAND ROVER U — Network/User

Vehicle speed not obtained

Brand: LAND ROVER

Type: U — Network/User

Views: UK: 12 EN: 145 RU: 18

AI status

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Page language: EN

Causes

Faulty or missing wheel speed sensor(s) or vehicle speed sensor (VSS)
ABS/BCM/instrument cluster or other module that generates or forwards speed data has failed
CAN/LIN communication fault (open/short/poor termination/intermittent)
Damaged wiring or connectors between sensors and ABS/traction module or between modules on the network
Blown fuse, poor battery voltage, or bad ground affecting modules
Incorrect module programming or software corruption

Symptoms

Speedometer displays 0 or no speed reading
Cruise control and speed‑dependent features disabled
Transmission may not shift correctly or goes to limp mode
ABS/traction control warning lights or stability lights illuminated
Related DTCs stored in ABS, transmission, instrument cluster or other modules
Navigation/GPS speed assist or adaptive features degraded

What to check

Scan all modules, record U1041 and any other stored DTCs and freeze frame data
Confirm battery voltage is within specification and check charging system
Inspect fuses and relays for ABS, BCM, instrument cluster and related modules
Check for obvious wiring damage, connector corrosion or loose connections at wheel hubs, ABS modulator, BCM and instrument cluster
Verify CAN bus health: measure CAN_H/CAN_L idle voltages and check termination resistance (~60 Ω across bus)
Check for other modules reporting lost communication (U0100, U0121, U0155, etc.)

Signal parameters

Wheel speed sensor: frequency (Hz) increases with vehicle speed; passive sensors produce AC voltage amplitude rising with speed, active/Hall sensors produce square pulses (0–5V) at pulse rate proportional to speed
Typical active sensor supply: 5 V reference or dedicated power from ABS module
CAN bus idle voltages: CAN_H ≈ 2.5 V, CAN_L ≈ 2.5 V; differential idle ≈ 0 V; dominant state differential ≈ 2 V
Bus termination resistance between CAN_H and CAN_L ≈ 60 Ω (two 120 Ω terminators in parallel)
Expected resistance/pulse values vary by manufacturer—compare measured sensor resistance and waveform to factory specification

Diagnostic algorithm

Retrieve and record all DTCs and freeze frame; note which module reported U1041 and any related codes.
Verify battery voltage and grounds; correct any low voltage or bad ground conditions before further testing.
Confirm instrument cluster/ABS/transmission modules are present and communicating with the scanner; identify which module is missing speed data.
Inspect wiring and connectors at wheel hubs and ABS module for damage or corrosion; repair as needed.
Monitor wheel speed sensor signals with an oscilloscope or diagnostic tool while rotating each wheel (jack or road test) to verify sensor output and compare to specs.
Check continuity and resistance of sensor wiring back to the ABS module; repair any opens/shorts.
Check CAN bus voltages and termination; isolate segments if necessary to find a bus fault (unplug suspected modules one at a time to see if network returns).
If sensors and wiring are good but no speed message is generated, perform ABS/traction module self‑test and communication tests; reflash or program module if recommended by manufacturer.
Replace defective sensor/module only after confirming fault source; clear codes and road test to verify the remedy.
If intermittent, perform extended road test with live data logging to capture failure conditions.

Likely causes

Faulty wheel speed sensor at one wheel or multiple sensors
Failed ABS/traction control module (no speed output)
Open or shorted CAN bus segment or missing termination
Connector corrosion or damaged harness at ABS or instrument cluster
Low battery voltage or poor chassis/engine ground
Module lost configuration after battery disconnect or replacement

Fault status

⚠️ Status

Vehicle speed signal/message not obtained by one or more control modules. Speed‑dependent systems may be disabled until communication or sensor fault is corrected.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.5 - 3.0 hours

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U1041 — Vehicle speed not obtained