AutoCodes – Ford – B14FE Ford

B14FE Ford Code - Low Side Driver 6

Quick Answer

The Upfitter Interface Module utilizes a Field Effect Transistor (FET) protective circuit strategy to protect the low and high side driver output circuits. Common causes include Faulty Upfitter Interface Module, Upfitter Interface Module harness is open or shorted, Upfitter Interface 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
B14FE Ford indicates Low Side Driver 6.
Common causes
Common causes include Faulty Upfitter Interface Module, Upfitter Interface Module harness is open or shorted, Upfitter Interface 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 763
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 23, 2019
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Code B14FE Ford Description

The Upfitter Interface Module utilizes a Field Effect Transistor (FET) protective circuit strategy to protect the low and high side driver output circuits. Output loads (current levels) are monitored for excessive current (which is typically caused by a short circuit to ground) and are shut down (turns off the voltage or ground provided by the module) when a fault is detected.
A short to battery voltage occurring on either a low or high side driver output circuit may also result in a temporarily loss of operation in the output circuit (no voltage or ground will be applied to the output circuit) to protect the module against a potential over temperature condition.
A Field Effect Transistor (FET) is a type of transistor that the module uses to control and monitor current flow on module output circuits. The Field Effect Transistor (FET) protection strategy prevents damage from occurring to the module.
Whenever a FET is turned off because of a fault condition a Diagnostic Trouble Code (DTC) is set in the module which corresponds to the specific fault observed. The module resets the Field Effect Transistor (FET) protection and allows the circuit to function when the fault is corrected or the ignition is cycled off and then back on. The ignition should always be cycled from off to on after a fault is corrected to ensure that FET protection is reset.
OBDII Code B14FE Ford - Low Side Driver 6 - AutoCodes.com
B14FE Ford Code - Low Side Driver 6

What are the Possible Causes of the DTC B14FE Ford?

  • Faulty Upfitter Interface Module
  • Upfitter Interface Module harness is open or shorted
  • Upfitter Interface Module circuit poor electrical connection

How to Fix the DTC B14FE Ford?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B14FE Ford 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 B14FE Ford Code

1. What are common symptoms of OBDII code B14FE Ford (Low Side Driver 6)?

Symptoms may include issues with the operation of various electrical components controlled by Driver 6, such as lights, window motors, or other accessories.

2. What could cause OBDII code B14FE Ford to trigger?

The code B14FE is typically triggered by a malfunction in the Low Side Driver 6 circuit, which may be caused by wiring faults, a faulty driver module, or a problem with the connected component.

3. How can I diagnose the issue related to OBDII code B14FE Ford?

A thorough inspection of the wiring harness, connectors, and the driver module is recommended. Testing the Driver 6 circuit for continuity and proper voltage can help pinpoint the exact cause of the problem.

4. Can I drive my vehicle with OBDII code B14FE Ford active?

It is generally not recommended to drive with an active OBDII code, as it indicates a potential issue that could affect the vehicle's performance or safety. It's best to address the problem promptly.

5. Is it safe to reset OBDII code B14FE Ford and continue driving?

Resetting the code may temporarily turn off the warning light, but if the underlying issue is not fixed, the code is likely to reappear. It's advisable to diagnose and repair the problem to prevent further issues.

6. Are there any common repair tips for fixing OBDII code B14FE Ford?

Check for loose or damaged wiring, ensure proper connections, and test the driver module for functionality. Replacing any faulty components and clearing the code may resolve the issue.

7. Can a DIY enthusiast fix OBDII code B14FE Ford at home?

Depending on your experience and access to tools, diagnosing and repairing the issue related to code B14FE may be feasible for some DIYers. However, consulting a professional mechanic is recommended for accurate diagnosis and repair.

8. How much does it typically cost to repair OBDII code B14FE Ford at a repair shop?

The cost of repairing OBDII code B14FE can vary depending on the exact cause of the issue, labor rates in your area, and the cost of any replacement parts needed. It's best to get estimates from local repair shops.

9. Will OBDII code B14FE Ford cause my vehicle to fail an emissions test?

If the code triggers the check engine light, it can result in a failed emissions test depending on the regulations in your area. It's important to address the issue promptly to ensure your vehicle meets emissions standards.

10. How long does it typically take to repair OBDII code B14FE Ford?

The repair time for OBDII code B14FE can vary based on the complexity of the issue and the availability of parts. Simple fixes may take a few hours, while more involved repairs could require a day or more.

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