U2514

Code

LAND ROVER U — Network/User

Missing message for vehicle speed

Brand: LAND ROVER

Type: U — Network/User

Views: UK: 20 EN: 44 RU: 21

AI status

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Page language: EN

Causes

ABS/ESP or speed-sender module not transmitting vehicle speed message
Broken or corroded wiring or connector between sender module and CAN bus
CAN bus open/short, missing termination or incorrect bus voltage
Blown fuse, loss of power or ground to the transmitting or receiving module
Module software/firmware mismatch or module asleep/not initialized
Faulty receiving module (e.g., instrument cluster, BCM) or internal comms fault

Symptoms

Speedometer or odometer inoperative or showing 0
Cruise control unavailable or disabled
ABS/traction control or stability warning lamp illuminated
Transmission shift irregularities (shift logic relying on vehicle speed)
Speed-dependent features not working (e.g., auto door locks, wipers)
Multiple network/communication-related faults present in scan tool

What to check

Read all U-codes and related B/C/P codes with a full dealer-level scan tool; view freeze frame and live data.
Check whether the module that should publish vehicle speed (ABS/ESP or speed-sensor module) is present on the CAN bus and powered.
Verify fuses and battery/ground connections for the transmitting and receiving modules.
Inspect connectors and wiring for damage, corrosion or poor pin contact at ABS, BCM and instrument cluster.
Use a CAN bus monitor or oscilloscope to look for the vehicle speed CAN message and inspect CAN_H/CAN_L waveforms and differential signal.
Measure CAN bus resistance across H and L — expect ~60 ohm (two 120 ohm terminators in parallel) if applicable.

Signal parameters

Message: vehicle speed CAN message (source commonly ABS/ESP or speed-sender module)
Bus type: high-speed CAN (vehicle-dependent, commonly 250 kbps or 500 kbps)
Expected update rate: typically several Hz (often 1–20 Hz depending on module and vehicle function)
Data units: vehicle speed in km/h or mph encoded in the message payload
Idle bus voltages: CAN_H and CAN_L nominally near mid-supply (~2.5 V) with a healthy differential during data bits; check with oscilloscope
Expected termination: approx. 60 ohm measured across CAN_H and CAN_L (two 120 ohm terminators in parallel) on most high-speed CAN networks

Diagnostic algorithm

Connect a capable scan tool, record U2514 and any related codes; note freeze-frame and instrument data.
Determine which module is expected to transmit vehicle speed (consult manufacturer wiring/IDS). Verify that transmitter module is powered and awake.
Check fuses and main grounds for both transmitting and receiving modules; repair as needed.
Visually inspect connectors and wiring harnesses at ABS/ESP, wheel sensors (if applicable), BCM and instrument cluster; repair corrosion or damage.
Use a CAN bus diagnostic tool or oscilloscope to monitor CAN_H/CAN_L and confirm presence/absence of the speed message and look for bus errors (bus-off, noise, missing termination).
Measure continuity and resistance of CAN_H and CAN_L between modules if message absent; repair open/shorts and recheck termination resistance.
If the transmitting module is not responding, perform basic module checks (power, ground, wake signals). Replace or reprogram the module only after confirming wiring and power are correct.
If wheel speed sensors are the data source, check individual sensor signals at each wheel while rotating or during a road test (oscilloscope or lab scope preferred).
After repairs, clear the codes, reinitialize modules if required (wake/relearn procedures or software updates), then road test to confirm the vehicle speed message is present and the code does not return.

Likely causes

Faulty ABS/vehicle dynamics module (no speed message transmission)
Open/short in CAN_H or CAN_L wiring or poor CAN bus termination
Loss of power or ground to the transmitting module (fuse, ground strap)
Faulty or unplugged connector at ABS, BCM or instrument cluster
Module in bus-off state or software/configuration error

Fault status

⚠️ Status

Missing message for vehicle speed — the expected vehicle speed CAN message was not received by one or more receiving modules. Check transmitter module, CAN bus integrity, power/ground, and connectors.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.0-3.0 hours

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