B1714
Seat Driver Front Down Switch Circuit Open
Body Chassis/Safety Seat Control 🟢 Low — Fix at next service
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What This Actually Means
In plain language — no jargon

The driver's seat down switch circuit has an open connection, like a broken wire in the circuit that tells the car when you're pushing the seat down. The car can't detect the switch signal, so it can't complete the seat adjustment function.

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Symptoms You May Notice
3 known symptoms for this code
Driver seat won't move down or moves inconsistently
Seat adjustment controls unresponsive or intermittent
Warning light or message related to seat adjustment
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Embedded Systems Insight
What the ECU/ECM is actually computing

The ECU monitors the voltage signal from the driver seat down switch circuit. When the switch is pressed, it should complete a circuit and pull voltage to ground. An open circuit prevents this signal from being detected.

Voltage & Parameter Thresholds

Parameter Normal Range Fault Condition
Switch Signal Voltage 0V when pressed (ground), 5V or higher when released Open circuit: no voltage change or stuck at high voltage
Circuit Continuity Complete path with resistance under 10 ohms No continuity detected, open circuit condition
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Diagnostic & DIY Fix Guide
Check these in order — from cheapest to most complex
1
Wiring harness connector
Inspect and reseat the seat control module connector under the seat; corrosion or loose pins are common culprits.
2
Switch contacts/seat down switch
Clean or replace the seat down switch itself if contacts are corroded or stuck open.
3
Wiring harness
Trace and repair any broken, pinched, or corroded wires in the seat circuit between the switch and module.