AutoCodes – Dodge – B2734 Dodge

B2734 Dodge Code - Passenger Occupant Detection Sensor Circuit Short To Battery

Quick Answer

The Occupant Detection Sensor (ODS) is a resistive sensor that is located in the front passenger seat. Common causes include Faulty Passenger Occupant Detection Sensor, Passenger Occupant Detection Sensor harness is open or shorted, Passenger Occupant Detection Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B2734 Dodge indicates Passenger Occupant Detection Sensor Circuit Short To Battery.
Common causes: Common causes include Faulty Passenger Occupant Detection Sensor, Passenger Occupant Detection Sensor harness is open or shorted, Passenger Occupant Detection Sensor circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 3,908

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jan 26, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2734 Dodge Description

The Occupant Detection Sensor (ODS) is a resistive sensor that is located in the front passenger seat. This sensor is only used for passenger seatbelt reminder. The seat sensor assumes a passenger is present when a minimum of 53.5 pounds (20kg) of weight is placed in the seat. The resistance of the sensor decreases, signaling to the ORC module that a passenger is present. The ORC then transmits this information to the Instrument cluster over the CAN bus. The passenger is only reminded to buckle up if the passenger seat occupant minimum weight threshold determined by the ODS is surpassed and the seat belt buckle is still not latched. The ODS receives battery voltage and clean ground through dedicated sensor plus and minus circuits from the ORC. The ORC receives, processes, and continuously monitors (monitor rate of 500 ms) the analog signal from the ODS. The ODS component is not repairable, if determined inoperable, it would require to be replaced with a new component. The airbag warning lamp will not set for this fault.
The ORC detects High voltage on the Passenger Occupant Detector Sensor Signal circuit for 2.5 - 5 seconds. The Diagnostic Trouble Code (DTC) will not latch for the entire ignition cycle. The code goes from Active to Stored 2.5 - 5 seconds after the code setting criteria is gone. This code also covers the Open fault.

OBDII Code B2734 Dodge - Passenger Occupant Detection Sensor Circuit Short To Battery - AutoCodes.com — B2734 Dodge Code - Passenger Occupant Detection Sensor Circuit Short To Battery

What does this mean?

What are the Possible Causes of the DTC B2734 Dodge?

Faulty Passenger Occupant Detection Sensor
Passenger Occupant Detection Sensor harness is open or shorted
Passenger Occupant Detection Sensor circuit poor electrical connection
Faulty Occupant Detection Sensor (ODS)

How to Fix the DTC B2734 Dodge?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2734 Dodge code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B2734 Dodge Code

1. What does the OBDII code B2734 mean on a Dodge vehicle?

The B2734 code indicates a "Passenger Occupant Detection Sensor Circuit Short To Battery," meaning there is an electrical issue with the sensor system used to detect the presence of a passenger for airbag deployment.

2. What are the common symptoms of the B2734 code?

Typical symptoms include the airbag warning light being illuminated, possible deactivation of the passenger airbag, and sometimes incorrect passenger detection.

3. What causes the B2734 code to appear?

Common causes include a short circuit in the occupant detection sensor wiring, a faulty sensor, damaged connectors, or issues with the control module.

4. Can a damaged passenger seat cause the B2734 code?

Yes, physical damage to the passenger seat could potentially damage the occupant detection sensor or its wiring, triggering the code.

5. Is it safe to drive with the B2734 code active?

While the vehicle may still be drivable, it is not safe because the airbag system may not function correctly in the event of an accident.

6. How can I diagnose the B2734 code?

Diagnosis involves checking the wiring and connectors for damage or shorts, testing the occupant detection sensor for faults, and using a scan tool to monitor sensor performance.

7. Can I clear the B2734 code without fixing the issue?

While you can clear the code with an OBDII scanner, it will likely return if the underlying issue is not resolved.

8. How much does it cost to repair the B2734 code?

Repair costs vary depending on the issue, but replacing a faulty sensor or repairing wiring typically ranges from $100 to $500.

9. Can I fix the B2734 code myself?

If you have experience with automotive electrical systems, you may be able to inspect and repair damaged wires or connectors. However, sensor replacement or advanced diagnostics may require professional help.

10. Does the B2734 code affect the entire airbag system?

In many cases, the code specifically impacts the passenger airbag system, but it can also trigger a warning for the entire airbag system.