: Websites like OBD-Codes.com, RepairPal, or even Mitsubishi-specific forums can offer insights into what DTCs mean and possible fixes.
In rare cases, voltage spikes or unsuccessful programming attempts can corrupt the security memory on the ETACS, causing it to incorrectly view your original key as a foreign transponder. Symptoms Accompanying DTC B1766
The dashboard security light (often an icon of a key or a padlock) will either flash rapidly or stay illuminated solid red.
This code is primarily a security and anti-theft measure. Modern Mitsubishi transponder keys are designed to be programmed only once; once synced to a specific ETACS unit, they cannot be easily overwritten or reused for another car. Common Scenarios: Used Keys:
If you own a Mitsubishi vehicle—whether it’s an Outlander, Lancer, Eclipse Cross, ASX, or Pajero—and you’ve recently seen the check engine light or the SRS (Supplementary Restraint System) warning light illuminate, you might have pulled a diagnostic trouble code (DTC) that reads .
| | Probable Definition | Likely Cause | | :--- | :--- | :--- | | SRS Airbag | Driver’s Air Bag Module Circuit Open | A break in the clockspring, faulty wiring, or a defective airbag module. | | Immobilizer | Already Learned by Other Vehicle | The vehicle security system has detected a key or ECU component programmed for a different car. |
Use a MUT-III diagnostic tool or an equivalent professional scanner to delete all currently registered keys from the Immobilizer-ECU.
Perform a PLC "Reset" or use the software to "Clear Alarm History." 4. Verify Input/Output Connections
Carefully desolder the chip from the original board using a hot-air rework station.