B1653 Seat Position Airbag Sensor Circuit Malfunction

OBD2 Code: B1653

Description: Seat position airbag sensor circuit malfunction.

Definition: This code indicates a problem with the seat position airbag sensor circuit, which may involve issues such as wiring faults, connector problems, or a faulty sensor that affects the proper deployment of airbags based on seat position.

B1653 – Seat Position Airbag Sensor Circuit Malfunction

Typical Severity: Moderate

Common Causes

B1653 – Seat Position Airbag Sensor Circuit Malfunction

Common Causes:

• Faulty seat position sensor
• Wiring issues in the seat position sensor circuit
• Loose or corroded electrical connections related to the seat position sensor
• Issues with the airbag control module

Common Misdiagnosis

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OBD2 Code: B1653

Description: Seat Position Airbag Sensor Circuit Malfunction

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

Common Diagnostic Steps

OBD2 Code: B1653

Description: Seat Position Airbag Sensor Circuit Malfunction

• Check for any related Technical Service Bulletins (TSBs) that may apply to the vehicle model and year.
• Inspect the seat position airbag sensor wiring and connectors for damage, corrosion, or disconnection.
• Use a multimeter to test the continuity of the seat position airbag sensor circuit.
• Verify proper voltage supply to the seat position airbag sensor using a digital volt-ohm meter (DVOM).
• Examine the seat track and ensure it is not obstructed or damaged, which could affect sensor operation.
• If equipped, use an OBD2 scanner to clear the code and perform a road test to see if it returns.
• If necessary, replace the faulty seat position airbag sensor with a new one following manufacturer specifications.