Ford B166a60 ((new)) May 2026
is a Diagnostic Trouble Code (DTC) used in Ford vehicles to indicate an issue with the Heated Mirror Circuit MFC Auction Code Definition DTC B166A: Heated Mirror Circuit. Sub-fault :60: Typically indicates an Event Information Signal Plausibility Failure , often manifesting as an "Interrupt" in the circuit. MFC Auction Common Symptoms
The passenger or driver-side mirror glass fails to defrost or clear fog.
The code may appear as a "permanent" or "commanded" DTC (CMDTC) during a scan with tools like or a professional diagnostic tablet.
No visible warning lights on the dashboard, as this is a body/convenience system fault rather than an engine or safety issue. MFC Auction Likely Causes Open Circuit:
A break in the wiring leading to the mirror heating element. Faulty Mirror Glass:
The internal heating element within the mirror glass has burned out or cracked. Module Issues: A problem with the Passenger Door Module (PDM) Driver Door Module (DDM) , which controls the mirror's power. Connector Corrosion:
Moisture or debris in the mirror assembly connectors preventing a solid electrical connection. MFC Auction Diagnostic & Fix Steps Visual Inspection: ford b166a60
Check for cracked mirror glass or loose wiring behind the mirror assembly. Fuse Check:
Verify the fuse for the heated mirrors is intact (often shared with the rear defroster). Test Resistance:
Use a multimeter to check for continuity at the two pins on the back of the mirror glass. If the circuit is open (infinite resistance), the glass needs replacement. You can attempt a soft reset
of the module or the vehicle's electrical system to see if the code clears, though hardware faults will cause it to return immediately.
Are you experiencing this code on a specific Ford model, like a , or is it affecting only one side of the vehicle? Ford VEHICLE DIAGNOSTIC REPORT - MFC Auction House
While "B166A60" is often associated with technical assembly codes or interior color specifications in Ford’s parts catalog, it is most commonly recognized in consumer contexts as the Ford Original All-Weather Front Tub Floor Mats (specifically for models like the Fiesta and Puma). Ford All-Weather Tub Floor Mats Review is a Diagnostic Trouble Code (DTC) used in
These mats are designed for heavy-duty protection, utilizing a synthetic rubber material to trap moisture and debris. Custom Precision Fit
: As a genuine OEM product, these mats are laser-measured to fit the front footwells of specific models like the Fiesta (2017+) Puma (2019+)
. This ensures they don't slide or interfere with the pedals. "Tub" Style Protection
: Unlike flat mats, the "tub" design features raised edges that effectively contain spills, mud, and melted snow, keeping your car’s original carpeting pristine. Safety First
: The mats include integrated attachment points that snap onto the existing floor pegs, preventing the mat from bunching up under the driver's feet. Maintenance
: One of the biggest perks is the ease of cleaning. They can be quickly removed and hosed down or wiped with a damp cloth. The Verdict: If the airbag light is on, the entire
If you prioritize interior longevity and a perfect "factory look," these mats are an excellent investment. While they may be more expensive than universal aftermarket options, the precise fit and superior retention of dirt and water make them a top choice for owners in wetter climates. comparison between these OEM mats and aftermarket brands like WeatherTech Husky Liners
Are ford all weather floor mats worth the extra money? - Facebook
Here’s a helpful write‑up for the Ford B166A60 fault code.
3. Corroded Connector C301 or C311
The main connector under the passenger seat traps moisture, road salt, and dirt. Corrosion on the tiny pins disrupts millivolt-level signals from the OCS.
Diagnostic & Repair Steps
Important Safety Note
Never disable or bypass the OCS system. Disabling it could cause the passenger airbag to:
- Not deploy when needed (adult passenger)
- Deploy unnecessarily (child seat – risk of injury)
If the airbag light is on, the entire supplemental restraint system may be degraded.
