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Home / DTC / C1A65 — Driver Door Module Configuration Error

C1A65 — Driver Door Module Configuration Error

Detailed page for trouble code C1A65.

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C1A65

LAND ROVER C — Chassis

Driver Door Module Configuration Error

Brand: LAND ROVER
Type: C — Chassis
Views: UK: 20 EN: 20 RU: 18
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Incorrect or incomplete module coding/programming
  • Software version mismatch after module replacement or update
  • Corrupted configuration memory in the driver door module
  • Loss or corruption of CAN/ LIN network communication
  • Faulty module due to internal hardware failure
  • Damaged wiring, pins or connectors (water ingress, corrosion, chafing)

Symptoms

  • Driver door functions intermittent or inoperative (windows, mirror fold, central locking)
  • Driver door module not responding to diagnostic tool or returns unexpected identifiers
  • Multiple network-related DTCs present (gateway or other body modules)
  • Door-related features disabled or defaulted to basic behavior
  • Visible water damage or corrosion at door harness/connector

What to check

  • Read all stored and pending DTCs from the driver door module and vehicle gateway; record freeze frame and related codes
  • Check battery voltage (should be stable ~12–14.5V) and ensure good ground before testing or programming
  • Inspect fuses for body/door modules and associated circuits
  • Visually inspect driver door module connector and door harness for corrosion, bent pins, water ingress or damage
  • Verify module presence on CAN/LIN using diagnostic tool (module ID, hardware and software numbers)
  • Check for related U-network (Uxxxx) codes indicating gateway or bus loss

Signal parameters

  • Module responds to diagnostic addressing (UDS/ISO 14229) with valid hardware and software IDs
  • ReadDataByIdentifier (0x22) returns configuration/coding bytes for the DDM
  • Module heartbeat/periodic CAN messages present and stable (no frequent timeouts)
  • Supply voltage to module: ~11.5–14.5V under test conditions
  • Resistance/continuity on door harness circuits within specification (manufacture data)
  • No repeated Negative Response codes (0x7F) to configuration read requests

Diagnostic algorithm

  1. Connect a Land Rover-capable diagnostic tool and read all DTCs from DDM and vehicle gateway; save reports.
  2. Verify vehicle battery healthy and fully charged; maintain stable voltage during diagnostics and programming.
  3. Inspect fuses and visually examine DDM connector and door harness for water ingress, corrosion or damage; repair as required.
  4. Confirm the DDM is present on the network: read module identifiers (hardware part number, software part number, VIN and coding). Note mismatches.
  5. Check for communication errors: monitor CAN/LIN traffic for DDM messages, look for timeouts or invalid frames. Perform wiggle test and observe for dropouts.
  6. If module reports incorrect coding or missing options, compare module coding/option bytes to known vehicle build data or MSC/IT system. Obtain correct configuration from OEM source.
  7. If coding is incorrect but hardware OK, perform authorized re-coding/programming using OEM tool (ensure correct security access and follow manufacturer procedure). Back up original configuration before changes.
  8. If configuration area appears corrupted or programming fails repeatedly, try re-flash/update module software per Land Rover procedure. Ensure stable battery and ignition state during reflash.
  9. After coding/reprogramming, clear DTCs and perform function tests of all door features. Re-scan for reoccurrence.
  10. If communication faults persist or module fails to accept correct coding, replace the DDM with a correctly programmed unit and ensure it is paired/encoded to vehicle (immobilizer/gateway pairing if required).
  11. Re-test complete system and confirm no related network errors remain.

Likely causes

  • Module was replaced or reprogrammed with wrong software/coding
  • Poor or intermittent CAN communication between DDM and gateway
  • Corroded/loose connector at the driver door module
  • Configuration memory corruption caused by low battery or interrupted reflash

Fault status

⚠️ Status
Driver Door Module configuration invalid or incompatible with vehicle; module coding or communication fault detected.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.5 hours

Similar codes

C1A64 C1A66 C1A67 U0100 U0415
320

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