AutoCodes – Subaru – B14B3 Subaru

B14B3 Subaru Code - Passenger Seat Heater Thermistor Circuit Open

Quick Answer

The Air Condition (A/C) Control Module monitors the Passenger Seat Heater Thermistor. Common causes include Faulty Passenger Seat Heater Module, Passenger Seat Heater Module harness is open or shorted, Passenger Seat Heater Module 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: B14B3 Subaru indicates Passenger Seat Heater Thermistor Circuit Open.
Common causes: Common causes include Faulty Passenger Seat Heater Module, Passenger Seat Heater Module harness is open or shorted, Passenger Seat Heater Module 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,896

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 15, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B14B3 Subaru Description

The Air Condition (A/C) Control Module monitors the Passenger Seat Heater Thermistor. The A/C Control Module sets the OBDII code when the Passenger Seat Heater Thermistor is not to factory specifications.

OBDII Code B14B3 Subaru - Passenger Seat Heater Thermistor Circuit Open - AutoCodes.com — B14B3 Subaru Code - Passenger Seat Heater Thermistor Circuit Open

What does this mean?

What are the Possible Causes of the DTC B14B3 Subaru?

Faulty Passenger Seat Heater Module
Passenger Seat Heater Module harness is open or shorted
Passenger Seat Heater Module circuit poor electrical connection
Faulty Air Condition (A/C) Control Module

How to Fix the DTC B14B3 Subaru?

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 B14B3 Subaru 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.

Need more information about the B14B3 Subaru code?

Need more information on how to fix the B14B3 Subaru code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B14B3 Subaru code diagnosed by a professional: Find a repair shop in your area

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 B14B3 Subaru Code

1. What are the common symptoms of OBDII code B14B3 Subaru (Passenger Seat Heater Thermistor Circuit Open)?

- Common symptoms include the passenger seat heater not working, the seat not heating up, or a warning light on the dashboard related to the seat heater system.

2. What can cause the OBDII code B14B3 Subaru to occur?

- The code can be triggered by a faulty thermistor in the passenger seat heater, wiring issues, loose connections, or a damaged seat heater module.

3. How can I diagnose the cause of the Passenger Seat Heater Thermistor Circuit Open code?

- You can use a multimeter to test the resistance of the thermistor, inspect the wiring and connections for any damage, and check the seat heater module for any issues.

4. Can I continue driving my Subaru with the B14B3 fault code?

- It is generally safe to drive the vehicle with this fault code, but it is recommended to address the issue promptly to ensure the proper functioning of the passenger seat heater.

5. How can I repair the Passenger Seat Heater Thermistor Circuit Open issue?

- Repair options include replacing the faulty thermistor, repairing any damaged wiring or connections, or replacing the seat heater module if necessary.

6. Is it possible to reset the OBDII code B14B3 Subaru without fixing the underlying issue?

- You can clear the fault code temporarily, but it will likely reappear if the root cause of the problem is not resolved.

7. Are there any DIY repair tips for fixing the Passenger Seat Heater Thermistor Circuit Open fault?

- DIY enthusiasts can attempt to test the thermistor, inspect the wiring carefully, and check for loose connections before considering professional repair or replacement.

8. Will fixing the B14B3 code require a visit to a Subaru dealership or can it be done at an independent mechanic?

- The issue can typically be addressed by an independent mechanic with experience in Subaru vehicles, as long as they have the necessary tools and knowledge to diagnose and repair seat heater problems.

9. How much can I expect to pay to repair the Passenger Seat Heater Thermistor Circuit Open fault?

- Repair costs can vary depending on the exact cause of the issue, but they may range from $100 to $300 for parts and labor.

10. Can a faulty passenger seat heater thermistor impact the overall safety of the vehicle?

- While the issue may not directly impact the overall safety of the vehicle, it can affect passenger comfort and convenience, especially in cold weather conditions.