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Home / DTC / B1760 — Coding data mismatch

B1760 — Coding data mismatch

Detailed page for trouble code B1760.

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Code

B1760

MITSUBISHI B — Body

Coding data mismatch

Brand: MITSUBISHI
Type: B — Body
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Replacement control module not coded to vehicle
  • Incomplete or interrupted reprogramming/update
  • Wrong software/firmware version installed
  • Corrupted coding data or checksum error
  • Battery voltage drop during programming
  • Faulty module or internal memory failure

Symptoms

  • Related body functions inoperative or behaving incorrectly (e.g., keyless entry, immobilizer, lighting, climate functions)
  • One or more warning lamps illuminated (security, ABS, CEL depending on affected module)
  • Intermittent or permanent loss of communication with the module
  • Vehicle may not start if immobilizer/security coding mismatches
  • Multiple related DTCs present in other modules

What to check

  • Read and record all DTCs and freeze/frame data with a capable scan tool (preferably OEM-level)
  • Check vehicle VIN and part number stored in the suspect module against vehicle VIN
  • Inspect connectors and wiring for corrosion, damage, or loose pins at the affected module and gateway modules
  • Verify battery voltage and charging system; ensure stable power (recommended >12.4 V) before programming
  • Review service history for recent module replacement or software updates
  • Check software/firmware versions and coding values against factory specifications

Signal parameters

  • Stored coding value(s) / coding byte map
  • Module software/firmware version and calibration ID
  • VIN and serial number saved in module
  • CAN bus error counters and bus load
  • Battery voltage during communication/programming
  • Checksum or CRC status for module configuration memory

Diagnostic algorithm

  1. Connect OEM-capable diagnostic tool and record all DTCs, module IDs, software versions and VIN entries.
  2. Verify whether the code appeared after a recent module replacement or software update (check service records).
  3. Inspect connectors/wiring at the affected module and gateway modules; repair any physical faults.
  4. Confirm stable battery voltage; if low, charge or connect a stable power supply before proceeding.
  5. Compare module's stored VIN/coding and software version to factory values. Note any mismatches.
  6. If coding is incorrect or missing, perform the manufacturer-prescribed coding/initialization using factory tools. Follow exact model-specific procedures.
  7. Reflash module firmware if software version is incorrect or if factory guidance recommends an update.
  8. Clear codes, cycle ignition, and re-scan. Verify that the affected functions operate and that the DTC does not return.
  9. If code persists after correct coding/reflash, consider module replacement or return-to-supplier testing; confirm grafting/faulty memory as possible cause.
  10. Document actions and advise customer if additional network module updates are required to propagate correct coding across modules.

Likely causes

  • Technician did not complete manufacturer coding/calibration step after ECU/module replacement
  • Software update failed or was stopped due to low battery/connection loss
  • Used/aftermarket module retains coding from previous vehicle and was not reprogrammed
  • CAN/bus communication errors preventing module from receiving correct coding

Fault status

⚠️ Status
Coding data mismatch — module configuration or calibration stored in the control unit does not match expected factory values; may indicate incorrect or incomplete programming, incompatible module, or corrupted memory.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

B1761 B1780 B1790 U0100 U0121 U0073
406

Browse 406 MITSUBISHI manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

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