The OBD code B2139 indicates a fault with the PATS transceiver.
This affects the Passive AntiTheft System.
Symptoms include the Engine Light being ON.
The cause is often related to the Powertrain Control Module reprogramming.
It’s a moderate issue.
To fix, inspect the wiring harness, connectors, and components for any damage or corrosion.
| Repair Importance Level | 10.0 (Out of 10) |
| Estimated Repair Time | Approximately 1.0 hour |
| Repair Difficulty Level | 10.0 (Out of 10) |
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Symptoms of the b2139 OBD Code
The vehicle displays a fault code B2139 related to the airbag system.
- Symptoms: Service Engine Soon Warning Light comes on.
- Loss of communication with the instrument panel control module.
- Difficulty starting the vehicle.
- Engine stalling while driving.
- Difficulty shifting gears.
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Causes of the b2139 OBD Code
Possible triggers for fault code B2139 include issues with the airbag module or wiring faults.
- B2139 can be caused by a faulty door ajar switch.
- A broken wiring harness.
- Corroded electrical connectors.
- Low voltage in the system.
- Or a malfunctioning Body Control Module (BCM).
- Causes: Powertrain Control Module (PCM) Reprogram, Passive AntiTheft System (PATS).
Fixing Error Code b2139 Step By Step
To resolve fault code B2139, inspect the wiring harness for any damage or loose connections.
- To fix OBDII code B2139, first, review the possible causes related to this code.
- Visually inspect the wiring harness and connectors associated with the circuit mentioned in the diagnostic trouble code.
- Check for any damaged components and ensure the connector pins are not broken, bent, pushed out, or corroded.
- Repair or replace any damaged wiring or connectors found during the inspection.
- Clear the fault code from the vehicle’s computer using a scan tool.
- Test drive the vehicle to verify if the issue has been resolved.
Cost Of Fixing b2139 Fault Code
Diagnosing and repairing fault code B2139 may involve inspecting and replacing the seat track position sensor.
The cost to diagnose and fix OBD code B2139 depends on the estimated 1. 0hour repair time.
Labor rates usually range from $75 to $150 per hour, so the total cost could be between $75 and $150. Factors like shop rates and the complexity of the repair can influence the final cost.
Details of the b2139 OBD Code
B2139 code indicates a fault in the airbag passenger side circuit.
OBD code B2139 means Seat Horizontal Motor Feedback Potentiometer Circuit Failure.
This code is triggered by the Body Control Module (BCM) when it detects a malfunction in the feedback signal from the seat horizontal motor potentiometer.
The potentiometer is part of the seat adjustment system and is used to provide feedback to the BCM about the position of the seat in the horizontal direction.
When the BCM receives an incorrect or outofrange signal from the potentiometer, it sets code B2139 to indicate a circuit failure in the seat horizontal motor feedback system.
Mechanic’s Tech Notes
For fault code B2139, refer to detailed diagnostic information for troubleshooting guidance and repair instructions.
OBDII code B2139 indicates a fault with the transmission control module (TCM) power supply voltage.
To diagnose this issue, use a multimeter to check the TCM power and ground circuits for proper voltage and continuity.
Additionally, utilize a scan tool to confirm communication between the TCM and other modules over the Controller Area Network (CAN) network.
If the wiring harness or connectors appear damaged, inspect them closely for issues like broken, bent, or corroded pins.
Reflashing the TCM software may be necessary to resolve the problem.
FAQ
OBD code B2139 indicates a Powertrain Control Module (PCM) reprogram is needed due to issues with the Passive AntiTheft System (PATS). Check wiring and connectors for damage.
Common symptoms for OBD code B2139 include Engine Light ON, caused by PCM reprogram or PATS issues. Fix: Inspect wiring, connectors, and components for damage or corrosion.
Diagnose OBD code B2139 by checking PCM reprogram and PATS. Inspect wiring harness, connectors, and pins for damage or corrosion. Fix as needed.
Wrap Up
If your vehicle is displaying OBD code b2139 along with issues like erratic speedometer readings or ABS system malfunctions, it may indicate a fault in the Vehicle Speed Sensor (VSS) circuit.
This could be caused by a faulty VSS, damaged wiring, or poor connections in the VSS circuit.
To address OBD code b2139, start by inspecting the wiring harness and connectors related to the Vehicle Speed Sensor.
Look for any signs of damage, corrosion, or loose connections.
Test the VSS itself for proper operation and replace it if necessary to resolve the issue.
