B14FC Code - Low 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
- B14FC indicates Low 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.
Code B14FC Description
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.
What are the Possible Causes of the DTC B14FC?
- Faulty Upfitter Interface Module
- Upfitter Interface Module harness is open or shorted
- Upfitter Interface Module circuit poor electrical connection
How to Fix the DTC B14FC?
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
B14FC:12 Low Side Driver 5 Short To battery
B14FC:13 Low Side Driver 5 Open Circuit
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B14FC 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 B14FC code?
Need more information on how to fix the B14FC code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B14FC code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- B14FC Ford — Low Side Driver 5
Frequently Asked Questions about B14FC Code
1. What are common symptoms associated with OBDII code B14FC (Low Side Driver 5)?
Symptoms may include issues with the operation of certain vehicle components controlled by Low Side Driver 5, such as lights, switches, or other electrical functions.
2. What can cause OBDII code B14FC to trigger?
The code can be triggered by a malfunction in the Low Side Driver 5 circuit, including issues with the driver itself, wiring problems, or a faulty component connected to it.
3. How serious is OBDII code B14FC?
While the severity can vary depending on the specific vehicle and symptoms, it is generally recommended to address this code promptly to avoid potential electrical system problems.
4. How can I diagnose the cause of OBDII code B14FC?
Diagnosis typically involves checking the wiring and connections related to Low Side Driver 5, testing the driver itself, and inspecting the components controlled by it for any issues.
5. Can OBDII code B14FC be cleared/reset, or does it require repair?
Clearing the code without addressing the underlying issue may only result in it reoccurring. It is advisable to diagnose and repair the root cause of the code.
6. Are there any DIY repair tips for OBDII code B14FC?
DIY repair may involve checking and repairing any damaged wiring, ensuring proper connections, and testing or replacing the affected component as needed.
7. How much does it cost to repair OBDII code B14FC?
Repair costs can vary depending on the specific cause of the issue, the vehicle make and model, and labor rates in your area. It's best to consult with a mechanic for an accurate estimate.
8. Can OBDII code B14FC affect vehicle performance?
While the code itself may not directly impact performance, issues with the electrical system controlled by Low Side Driver 5 can lead to operational problems with certain vehicle functions.
9. Is it safe to continue driving with OBDII code B14FC present?
It is generally recommended to address the underlying cause of the code to ensure the proper operation of the affected electrical components and avoid potential safety hazards.
10. How common is OBDII code B14FC in vehicles?
The occurrence of this specific code can vary among different vehicle models, but issues related to Low Side Driver circuits are not uncommon in automotive diagnostics.
Discuss the causes and fixes for B14FC OBDII Code
Code B14FC comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
