OBD Code B1719: Seat Driver Forward Switch Circuit Short To Battery

Q: What does OBD code B1719 mean?

Seat Driver Forward Switch Circuit Short To Battery. The driver's seat forward switch circuit is sending a constant maximum voltage signal to the ECU, like a stuck accelerator pedal that won't release. This prevents the seat adjuster from functioning properly because the ECU can't tell when the switch is actually being pressed.

Q: What are the symptoms of fault code B1719?

Driver seat forward adjustment button not working, Seat control warning light illuminated on dashboard, Inability to move seat forward electronically

Q: How do I fix OBD fault code B1719?

Disconnect and inspect the seat control connector for corrosion, bent pins, or moisture causing a short to power.. Trace the forward switch circuit wire from the seat to the control module for pinches, abrasions, or damaged insulation shorting to adjacent power wires.. Replace the defective switch if resistance testing shows internal short between the switch contacts and the power rail.

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What This Actually Means

In plain language — no jargon

The driver's seat forward switch circuit is sending a constant maximum voltage signal to the ECU, like a stuck accelerator pedal that won't release. This prevents the seat adjuster from functioning properly because the ECU can't tell when the switch is actually being pressed.

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Symptoms You May Notice

3 known symptoms for this code

Driver seat forward adjustment button not working

Seat control warning light illuminated on dashboard

Inability to move seat forward electronically

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Embedded Systems Insight

What the ECU/ECM is actually computing

The ECU monitors the voltage signal from the driver seat forward switch circuit. Normally, the signal toggles between ground (0V) and a reference voltage when the button is pressed. A short to battery keeps the signal constantly high, preventing the ECU from detecting button presses or releasing the seat motor.

Voltage & Parameter Thresholds

Parameter	Normal Range	Fault Condition
Switch Voltage	0V (off) to 5V (on) with transitions	Constant 12V+ (shorted to battery)
Circuit Resistance	Open circuit or ~100-500 ohms when activated	<10 ohms (direct short)

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Diagnostic & DIY Fix Guide

Check these in order — from cheapest to most complex

1

Wiring harness connector

Disconnect and inspect the seat control connector for corrosion, bent pins, or moisture causing a short to power.

2

Wiring loom and conduit

Trace the forward switch circuit wire from the seat to the control module for pinches, abrasions, or damaged insulation shorting to adjacent power wires.

3

Driver seat forward switch assembly

Replace the defective switch if resistance testing shows internal short between the switch contacts and the power rail.