B1617 Lost Communication with Front Airbag Sensor Left

OBD2 Code: B1617

Description: Lost communication with front airbag sensor left.

Definition: This code indicates that there is a loss of communication between the vehicle’s main control module and the front airbag sensor on the left side. This could be due to wiring issues, a faulty sensor, or a problem with the control module itself.

b1617: Lost Communication with Front Airbag Sensor Left

Typical Severity: Critical

Common Causes

b1617 – Lost Communication with Front Airbag Sensor Left

Common causes:

• Faulty front airbag sensor left
• Open or short in wiring between the front airbag sensor left and the rest of the airbag system
• Corroded or loose connections at the front airbag sensor left
• Issues with the airbag control module
• Interference from other electronic devices affecting communication with the front airbag sensor left

Common Misdiagnosis

OBD2 Code: B1617

Description: Lost communication with front airbag sensor left

Common Misdiagnosis: Replacing the airbag sensor without checking for wiring issues or connector problems.

Common Diagnostic Steps

OBD2 Code: B1617
Description: Lost Communication with Front Airbag Sensor Left

1. Verify the code using an OBD2 scanner to ensure it is active.
2. Inspect the wiring and connectors related to the front airbag sensor on the left side for any signs of damage, corrosion, or disconnection.
3. Check the power supply and ground connections to the front airbag sensor to ensure they are intact and providing proper voltage.
4. Test the communication lines (CAN bus) between the airbag control module and the front airbag sensor for continuity and resistance issues.
5. If available, use a multimeter or oscilloscope to check for signal integrity on communication lines.
6. Replace or repair any damaged components as necessary based on diagnostic findings.
7. Clear the code from the vehicle’s computer system using an OBD2 scanner after repairs are completed, then test drive to see if it returns.