B1D71 Chrysler 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 Chrysler 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 Chrysler 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 Chrysler?
- 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 Chrysler?
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 Chrysler 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 Chrysler Code
1. What does the OBDII code B1D71 mean on a Chrysler vehicle?
The B1D71 code indicates a problem with the Seat Front Vertical Position Sensor Circuit, specifically a low voltage condition.
2. What are the common symptoms of the B1D71 code?
Symptoms may include a malfunctioning front seat height adjustment, a seat that won’t respond to vertical movement commands, or an illuminated airbag/seat warning light.
3. What causes the B1D71 code in Chrysler vehicles?
Common causes include a faulty seat vertical position sensor, damaged wiring or connectors, or a failure in the seat control module.
4. Can I still drive my car with a B1D71 code?
Yes, you can drive the car, but seat adjustability may be limited, and it’s recommended to address the issue to ensure proper seat functionality and safety.
5. How do I diagnose the B1D71 code?
Start by inspecting the wiring and connectors for damage or corrosion, test the seat vertical position sensor with a multimeter, and check for any related fault codes.
6. How can I fix the B1D71 code on my Chrysler?
Repair or replace damaged wiring and connectors, replace the seat vertical position sensor if faulty, or reprogram/replace the seat control module if necessary.
7. What tools are needed to troubleshoot a B1D71 code?
You’ll need an OBDII scanner, a multimeter for electrical testing, and possibly basic tools to access the seat wiring and sensor.
8. How much does it cost to fix the B1D71 code?
The cost depends on the exact issue, but replacing a seat position sensor typically costs $100-$300, including parts and labor.
9. Can a B1D71 code trigger other warning lights?
Yes, it can sometimes trigger the airbag or seatbelt warning light if the seat position sensor data is critical for occupant safety systems.
10. Is the B1D71 code common in Chrysler vehicles?
It’s not a very common issue, but it can occur in Chrysler vehicles with power-adjustable seats, especially as components age or if exposed to moisture.
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