AutoCodes – Ford – B14F4 Ford

B14F4 Ford Code - High Side Driver 5

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: B14F4 Ford indicates High Side Driver 5.
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.

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Code Popularity 1,109

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 23, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B14F4 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 B14F4 Ford - High Side Driver 5 - AutoCodes.com — B14F4 Ford Code - High Side Driver 5

What does this mean?

What are the Possible Causes of the DTC B14F4 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 B14F4 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.

What does this mean?

Code Tech Notes

B14F4:11 High Side Driver 5 Short To Ground
B14F4:12 High Side Driver 5 Short To battery
B14F4:13 High Side Driver 5 Open Circuit

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B14F4 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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Need Help with the 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 B14F4 Ford Code

1. What are the common symptoms of OBDII code B14F4 Ford (High Side Driver 5)?

- Common symptoms include issues with the high side driver 5 circuit, such as illuminated warning lights on the dashboard, engine misfires, and poor performance.

2. What causes the OBDII code B14F4 Ford to trigger?

- The code B14F4 Ford (High Side Driver 5) is typically triggered by a malfunction in the high side driver 5 circuit, which controls various components in the vehicle.

3. How can I diagnose the OBDII code B14F4 Ford?

- Diagnosis of the code B14F4 Ford involves using an OBDII scanner to retrieve the fault code, followed by inspecting the high side driver 5 circuit for any damaged wiring, loose connections, or faulty components.

4. Can a DIY enthusiast repair the OBDII code B14F4 Ford?

- While some basic troubleshooting steps can be taken by a DIY enthusiast, repairing the high side driver 5 circuit may require specialized knowledge and tools. It is recommended to consult a professional mechanic for complex repairs.

5. What components are associated with the high side driver 5 circuit in a Ford vehicle?

- The high side driver 5 circuit in a Ford vehicle is typically associated with components like fuel injectors, ignition coils, and other high-voltage devices controlled by the engine control module (ECM).

6. Are there any precautionary measures to take when encountering the OBDII code B14F4 Ford?

- It is advisable to avoid driving the vehicle when the code B14F4 Ford is active to prevent potential damage to the engine or other critical components. Seeking professional assistance promptly is recommended.

7. How does the OBDII code B14F4 Ford affect vehicle performance?

- The code B14F4 Ford (High Side Driver 5) can significantly impact vehicle performance by causing issues such as rough idling, stalling, decreased fuel efficiency, and overall reduced engine power.

8. Is it safe to continue driving with the OBDII code B14F4 Ford unresolved?

- Continuing to drive with the code B14F4 Ford unresolved is not recommended, as it can lead to further damage to the vehicle's engine and related components. It is best to address the issue promptly.

9. Can extreme weather conditions trigger the OBDII code B14F4 Ford?

- Extreme weather conditions, such as excessive heat or moisture, can potentially affect the high side driver 5 circuit and contribute to triggering the OBDII code B14F4 Ford in a Ford vehicle.

10. How much does it typically cost to repair the OBDII code B14F4 Ford (High Side Driver 5)?

- The cost of repairing the OBDII code B14F4 Ford can vary depending on the extent of the damage, parts needed for replacement, and labor charges. It is advisable to obtain estimates from professional mechanics for an accurate cost assessment.