AutoCodes – Subaru – B14B1 Subaru

B14B1 Subaru Code - Driver Seat Heater Thermistor Circuit Open

Quick Answer

The Air Condition (A/C) Control Module monitors the Driver Seat Heater Thermistor. Common causes include Faulty Driver Seat Heater Module, Driver Seat Heater Module harness is open or shorted, Driver 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
B14B1 Subaru indicates Driver Seat Heater Thermistor Circuit Open.
Common causes
Common causes include Faulty Driver Seat Heater Module, Driver Seat Heater Module harness is open or shorted, Driver 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 2,177
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 15, 2019
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Code B14B1 Subaru Description

The Air Condition (A/C) Control Module monitors the Driver Seat Heater Thermistor. The A/C Control Module sets the OBDII code when the Driver Seat Heater Thermistor is not to factory specifications.
OBDII Code B14B1 Subaru - Driver Seat Heater Thermistor Circuit Open - AutoCodes.com
B14B1 Subaru Code - Driver Seat Heater Thermistor Circuit Open

What are the Possible Causes of the DTC B14B1 Subaru?

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

How to Fix the DTC B14B1 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 B14B1 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 B14B1 Subaru code?

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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 B14B1 Subaru Code

1. What are the common symptoms of OBDII code B14B1 in a Subaru related to the driver seat heater thermistor circuit open?

The common symptoms include a non-functional driver seat heater, no heat being generated by the seat heater, or an illuminated heater control switch light.

2. What usually causes the OBDII code B14B1 in a Subaru indicating a driver seat heater thermistor circuit open?

This code is typically caused by a faulty driver seat heater thermistor, damaged wiring or connectors in the circuit, or a malfunctioning seat heater control module.

3. How can I diagnose the driver seat heater thermistor circuit open issue in my Subaru when OBDII code B14B1 is triggered?

You can use a multimeter to test the resistance of the seat heater thermistor, inspect the wiring for any visible damage, and check the connectors for proper connection and signs of corrosion.

4. Can I continue driving my Subaru with the OBDII code B14B1 indicating a driver seat heater thermistor circuit open?

It is generally safe to drive the vehicle with this code, but you will not have the functionality of the driver seat heater until the issue is resolved.

5. What are some DIY repair tips for fixing the driver seat heater thermistor circuit open problem in a Subaru?

You can attempt to repair the wiring or connectors if they are damaged, replace the faulty seat heater thermistor yourself if you have the necessary skills, or seek professional help for a more accurate diagnosis and repair.

6. Is it expensive to repair the driver seat heater thermistor circuit open issue in a Subaru?

The cost of repair can vary depending on the exact cause of the problem, but it may involve replacing the seat heater thermistor, repairing wiring or connectors, or even replacing the seat heater control module.

7. Can weather conditions affect the occurrence of the OBDII code B14B1 in a Subaru related to the driver seat heater thermistor circuit open?

Extreme cold or moisture can potentially exacerbate issues with the seat heater thermistor circuit, leading to the triggering of this fault code.

8. Will resetting the OBDII code B14B1 in a Subaru fix the driver seat heater thermistor circuit open problem?

Resetting the code may temporarily turn off the warning light, but it will not fix the underlying issue causing the driver seat heater thermistor circuit open condition.

9. How long does it typically take to repair the driver seat heater thermistor circuit open issue in a Subaru?

The repair time can vary depending on the extent of the problem and the availability of parts, but it may take a few hours to a full day to diagnose and fix the issue.

10. Is it necessary to visit a dealership for repair if I encounter the OBDII code B14B1 in my Subaru indicating a driver seat heater thermistor circuit open?

While you can choose to visit a dealership for repair, independent automotive repair shops or skilled DIY enthusiasts can also effectively diagnose and address the problem.

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