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Home / DTC / U2610 — specification. The D2B slave ECU failed to receive. a report position

U2610 — specification. The D2B slave ECU failed to receive. a report position

Detailed page for trouble code U2610.

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U2610

LAND ROVER U — Network/User

specification. The D2B slave ECU failed to receive. a report position

Brand: LAND ROVER
Type: U — Network/User
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Page language: EN

Causes

  • Open or short in D2B wiring/circuits
  • Corroded or loose connector at the slave ECU or intermediate junction
  • Missing or low power supply or ground to the slave ECU
  • Failed or intermittent slave ECU hardware
  • Software/protocol mismatch or corrupted module software/configuration
  • Faulty or missing bus termination or shielding (electrical noise)

Symptoms

  • Related system feature inoperative or behaving incorrectly (e.g., position-dependent function not responding)
  • Illuminated warning lamp or message on the instrument cluster
  • U2610 stored in module memory and possibly additional U‑codes present on the same network
  • Intermittent operation of the affected subsystem
  • No response from the slave ECU when queried with a diagnostic tool

What to check

  • Read and record all stored and pending U‑codes and freeze frame data with a diagnostic scanner
  • Inspect connectors and wiring for the affected slave ECU for corrosion, bent pins, or water ingress
  • Verify vehicle battery voltage and ground quality at the module battery/ground pins
  • Check for related codes on other modules on the same D2B/network
  • Wiggle harness and connectors while monitoring live data/messages to reproduce the fault
  • Inspect and confirm presence and condition of any bus termination resistors and shielding

Signal parameters

  • Bus message: proprietary "position report" message ID (manufacturer-specific) — expected periodic transmission when active
  • Typical message frequency: periodic (vehicle‑dependent) — often multiple Hz when active
  • Bus type: vehicle D2B/network (proprietary/serial network) — behaves like a multi-drop communications bus
  • Supply voltage at slave ECU: nominal battery voltage (~12V) on power pins when ignition on
  • Ground: low resistance (
  • If bus is CAN-like: differential idle ~2.5 V per line and ~120 Ω total termination (verify with manufacturer data)

Diagnostic algorithm

  1. Confirm the code: clear codes, perform a drive/operational cycle and re-check to verify repeatability.
  2. Record all U‑codes and any related network errors from scan tool; note which module reported U2610 and which slave is affected.
  3. Visually inspect the slave ECU connector, harness, and intermediate junctions for damage, corrosion, or water entry; repair as needed.
  4. Verify power and ground at the slave ECU with ignition in the correct state. Repair any supply or ground faults.
  5. With a suitable diagnostic tool, attempt to poll the slave ECU. If there is no response, check wiring continuity between master and slave for opens/shorts.
  6. Use an oscilloscope or lab scope to observe the network signal(s) at the module connector while operating the system: look for expected periodic position message, correct idle voltages, and absence of excessive noise.
  7. Perform wiggle/stress tests on harness while watching live data/messages to find intermittent faults.
  8. Check bus termination, shielding, and resistance across the bus lines (if applicable). Replace or repair termination if out of specification.
  9. If wiring, power and grounds are good and bus signals look correct but the slave does not report, check for software/firmware updates or reflash/reconfigure the slave ECU per manufacturer procedure.
  10. If reprogramming is not possible or unsuccessful, replace the slave ECU and retest. After any repair, clear codes and verify proper operation and message presence.
  11. If fault persists, consult manufacturer technical documentation/service bulletins for module-specific diagnostic flows and message IDs.

Likely causes

  • Damaged connector or pin at the slave ECU preventing receipt/transmission of the position message
  • Slave ECU has lost internal power or ground and cannot report position
  • Intermittent wiring fault causing message drop under vibration or temperature
  • ECU software glitch or EEPROM corruption leading to failure to send expected message
  • Bus interference or missing termination resistor preventing reliable message transmission

Fault status

⚠️ Status
D2B slave ECU failed to send required position report message. Communication lost or message invalid.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours

Similar codes

U0100 U0140 U0121 U1000 U2100
413

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

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