Are you dealing with a or did this error appear with your original factory key ? AI responses may include mistakes. Learn more Code No.B1766: Transponder registered for other vehicle
If you are dealing with this code right now, please let me know: What is the exact of your Mitsubishi?
Leo didn't know it yet, but he had hit the "Immobilizer Wall." The (the car's Electronic Total Automobile Control System) had detected a "foreign" transponder—a key that had already been "learned" by another vehicle's security system. To the Pajero, this wasn't a replacement key; it was a digital intruder.
Q. Is the diagnosis code set? Replace the all ignition key, and register the ID codes (Refer to ). After registering the ID codes, Out-Club.ru Code No.B1766: Transponder registered for other vehicle
the EEPROM or using a dealer tool to overwrite the VIN/Option (OPT) number is often required. To help you further, could you tell me: Did this code appear after replacing a key Are you using a replacement module? model and year is your Mitsubishi? mitsubishi b1766 verified
If the scan tool points to the BCM as the source of the B1766 code, this suggests a driver's seat issue. Follow these diagnostic procedures:
Mitsubishi Electric MELFA/Factory Automation product manuals — "B1766" frequently appears in Mitsubishi part-number cross-references and BOMs; the official manuals give verified specs, signal lists, and wiring diagrams.
Trying to start the car with a key (or fob) that belongs to a different Mitsubishi, even if it is physically cut to fit your door and ignition.
almost always related to high resistance in the driver’s airbag circuit. The clock spring is the most common failed component. Proper diagnosis using resistance measurements (with system powered off and safe) will identify the fault without unnecessary parts replacement. After repair, always perform SRS system verification and clear DTCs. Do not ignore this code – it disables the driver’s airbag, creating a critical safety hazard. Are you dealing with a or did this
Attempting to program a second-hand key fob purchased from a salvage yard or online auction site. Mitsubishi keys use write-once transponder chips that cannot easily be rewritten once registered to a VIN.
The driver’s airbag contains an electro-pyrotechnic squib (a small resistive wire coated with explosive material). The SRS-ECU constantly monitors this circuit by passing a low-current diagnostic signal (approx. 10 mA) through the squib. Acceptable resistance for a healthy squib is (verified via Mitsubishi service manual data).
Remove all other keys, RFID fobs, and smartphones from the steering column area. Interfereing signals mimic transponder translation errors. Step 2: Validate the Power Supply & Ground
When you attempt to start the engine, the immobilizer system scans the ID code of the transponder embedded in the key. If the system detects a key ID that has already been "learned" or registered to a different vehicle's security system, it triggers B1766 and prevents the engine from starting. Common Symptoms Leo didn't know it yet, but he had hit the "Immobilizer Wall
[ Transponder Key / Fob ] ---> ( Transponder Coil / Antenna ) | ( Immobilizer Module ) | [Compares Secret ID Key] v [ DTC B1766 Logged ] <========== ETACS-ECU Module ===> [ Starter / Engine ECU Locked ] (ID belongs to another car)
| Aspect | | Other Brands (e.g., GM) | | :--- | :--- | :--- | | System Affected | Immobilizer / Anti-Theft System | Body Control Module (BCM) / Interior Comfort Systems | | Definition | "Already learned by other vehicle" / "Transponder registered for other vehicle" | "Seat Driver Forward Circuit Open" | | Primary Symptom | Engine cranks but will not start, security light flashing | Driver's seat cannot move forward, check engine light on |
Check for communication errors on the CAN bus lines. Repair any wiring faults found. Registered Key Test