B19A6 Mercury Code - Passenger Seat Back Blower Speed Short To Ground
Quick Answer
The Front Seat Climate Control Module (SCME) supplies voltage and ground to the passenger seat backrest blower motor. Common causes include Faulty Backrest Blower Motor, Backrest Blower Motor harness is open or shorted, Backrest Blower Motor 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
- B19A6 Mercury indicates Passenger Seat Back Blower Speed Short To Ground.
- Common causes
- Common causes include Faulty Backrest Blower Motor, Backrest Blower Motor harness is open or shorted, Backrest Blower Motor 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 B19A6 Mercury Description
What are the Possible Causes of the DTC B19A6 Mercury?
- Faulty Backrest Blower Motor
- Backrest Blower Motor harness is open or shorted
- Backrest Blower Motor circuit poor electrical connection
- Faulty Front Seat Climate Control Module (SCME)
How to Fix the DTC B19A6 Mercury?
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 B19A6 Mercury 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 B19A6 Mercury code?
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Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service
- Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
- Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
- Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
- Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.
Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.
Frequently Asked Questions about B19A6 Mercury Code
1. What does OBDII code B19A6 mean on a Mercury vehicle?
B19A6 indicates a short to ground in the passenger seat back blower speed circuit, which controls airflow for the seat's ventilation system.
2. What are the common symptoms of code B19A6 in a Mercury?
Symptoms may include the passenger seat back blower not functioning, reduced seat ventilation, or the climate control system displaying a fault.
3. What causes the B19A6 code to appear?
Common causes include damaged wiring, a shorted blower motor, a defective seat ventilation module, or a ground fault in the electrical circuit.
4. How can I diagnose the B19A6 code?
Inspect the wiring and connectors for damage or corrosion, test the blower motor for proper operation, and check for continuity or shorts in the circuit with a multimeter.
5. Can I drive my Mercury with the B19A6 code active?
Yes, you can drive the vehicle, but seat ventilation functionality may be impaired, and the electrical short could potentially cause further issues if not addressed.
6. How do I fix the B19A6 code on my Mercury?
Repairs may involve replacing damaged wiring, fixing any shorts to ground, or replacing the passenger seat back blower motor or ventilation module.
7. How much does it cost to repair the B19A6 code?
Repair costs vary, but fixing damaged wiring may cost $100–$300, while replacing a blower motor or module could range from $200–$500, depending on labor rates and parts.
8. Could a blown fuse cause the B19A6 code?
A blown fuse is not a direct cause of the code, but a ground fault or short circuit in the blower speed circuit could lead to a blown fuse.
9. How do I prevent the B19A6 code from returning?
Regularly inspect and maintain the seat ventilation system, ensure wiring is secure and undamaged, and address electrical issues promptly.
10. Do I need professional help to fix the B19A6 code?
While experienced DIYers can handle basic repairs, a professional mechanic may be needed for complex diagnostics or if specialized tools are required.
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