B1D71 Dodge Code - Seat Front Vertical Position Sensor Circuit Low
Quick Answer
The power seat system receives battery current through a 50 amp fuse in the Power Distribution Center (PDC) so that the power seats remain operational, regardless of the ignition switch position. Common causes include Faulty Seat Front Vertical Position Sensor, Seat Front Vertical Position Sensor harness is open or shorted, Seat Front Vertical Position Sensor 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
- B1D71 Dodge indicates Seat Front Vertical Position Sensor Circuit Low.
- Common causes
- Common causes include Faulty Seat Front Vertical Position Sensor, Seat Front Vertical Position Sensor harness is open or shorted, Seat Front Vertical Position Sensor 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 B1D71 Dodge Description
When a power seat switch is actuated, a battery feed and a ground path are applied through the power seat switch contacts to the appropriate motor or motors. The motor and drive unit operate to move the seat in the selected direction until the switch is released, or until the travel limit of the power seat track is reached. When the switch is moved in the opposite direction, the battery feed and ground path to the motor is reversed through the switch contacts. This causes the motor to run in the opposite direction.
When the seat motor is activated sensor supply voltage is switched on whenever motor is activated. If sensor voltage is not within a specified range this Diagnostic Trouble Code (DTC) will set. This DTC will only set when the seat switch is moved in the same direction three consecutive times.
What are the Possible Causes of the DTC B1D71 Dodge?
- Faulty Seat Front Vertical Position Sensor
- Seat Front Vertical Position Sensor harness is open or shorted
- Seat Front Vertical Position Sensor circuit poor electrical connection
- Front Vertical Seat Adjuster Motor
- Faulty Memory Seat Module
How to Fix the DTC B1D71 Dodge?
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 B1D71 Dodge 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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Frequently Asked Questions about B1D71 Dodge Code
1. What does the OBDII code B1D71 mean on a Dodge vehicle?
The B1D71 code indicates a problem with the Seat Front Vertical Position Sensor Circuit, specifically that the circuit is reporting a low voltage condition.
2. What are common symptoms of the B1D71 code?
Common symptoms include the seat not adjusting vertically, the seat adjustment motor not responding, or a warning light on the dashboard.
3. What causes the B1D71 code to appear?
The code can be caused by a faulty seat vertical position sensor, damaged wiring or connectors, or a malfunctioning seat control module.
4. How is the B1D71 code diagnosed?
A technician will use a scan tool to confirm the code, inspect the wiring and connectors for damage, and test the seat position sensor for proper operation.
5. Can the B1D71 code affect other vehicle systems?
In most cases, it only impacts the seat adjustment functionality and does not affect other systems.
6. How do you fix the B1D71 code?
Repairs usually involve replacing the faulty seat vertical position sensor, repairing damaged wiring or connectors, or reprogramming the seat control module if necessary.
7. Can I still drive my Dodge vehicle with the B1D71 code active?
Yes, the vehicle can still be driven, but the seat adjustment function may not work properly, which could impact comfort or ergonomics.
8. How much does it cost to repair the B1D71 code?
Repair costs can vary, but replacing a seat position sensor typically ranges from $150 to $300, depending on parts and labor.
9. Can a blown fuse cause the B1D71 code?
While unlikely, a blown fuse related to the seat control system may contribute to the issue and should be checked during diagnosis.
10. How can I prevent the B1D71 code from occurring again?
Regularly inspect seat wiring and connectors for wear or damage and avoid overloading the seat adjustment system to prevent sensor or wiring issues.
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