DTC Code B1682 – What does this code mean?

<ul> <li><a href="/problems/engine-warning-light-on"><b>Engine Light ON</b></a>: The engine light or service engine soon warning light illuminates on the dashboard, indicating a potential issue with the Passive Anti-Theft System (PATS). This symptom is often linked to the B1682 DTC code, which signifies that the PATS is disabled.</li> </ul>

<ul><li>The connection between the Passive Anti-Theft System (PATS) and the transponder may be disrupted, leading to communication issues.</li><li>A malfunctioning PATS transceiver can prevent the system from recognizing the key, disabling the anti-theft system.</li><li>The Powertrain Control Module (PCM) might be faulty, affecting the overall operation of the PATS.</li><li>A defective PATS key can fail to transmit the correct signal, causing the system to disable.</li></ul>

<ul> <li><b>Verify DTC Code</b>: Ensure the DTC B1682 is present using a diagnostic scanner. This code indicates that the Passive Anti-Theft System (PATS) is disabled.</li> <li><b>Check PATS Key</b>: Inspect the PATS key for damage or wear. Ensure the key is the correct one for the vehicle and is not a duplicate or aftermarket key.</li> <li><b>Inspect PATS Antenna</b>: Examine the PATS antenna located around the ignition lock cylinder for any visible damage or disconnection.</li> <li><b>Test PATS Module</b>: Use a multimeter to check the PATS module for proper voltage and ground connections. Ensure there are no open or short circuits.</li> <li><b>Check Wiring and Connectors</b>: Inspect the wiring and connectors between the PATS module and the PCM for any signs of corrosion, damage, or loose connections.</li> <li><b>Reprogram PATS</b>: If all components are functioning correctly, consider reprogramming the PATS system using the appropriate diagnostic tool to reset the system.</li> <li><b>Perform System Test</b>: After repairs or reprogramming, perform a system test to ensure the PATS is enabled and functioning correctly.</li></ul>

<p>The DTC code B1682 indicates that the Passive Anti-Theft System (PATS) is disabled. This is a <b>critical</b> issue as it compromises vehicle security, making it vulnerable to theft. Immediate attention is required to restore the system's functionality. Delaying repair could result in unauthorized access or theft, posing a significant risk to the vehicle's safety and security.</p>