B1719 — Seat Driver Forward Switch Circuit Short To Battery #

Note: The code label can vary depending on the vehicle manufacturer.

• Seat Driver Forward Switch Circuit High (Ford)
• Driver Seat Forward Switch Circuit Short To B+ (Toyota)
• Driver Seat Forward Switch Signal High (GM/Chevrolet)

Summary of DTC B1719 #

DTC B1719 indicates a problem in the driver seat forward switch circuit, specifically a short to battery voltage. This means the circuit that controls the forward movement of the driver’s seat is receiving an abnormally high voltage, usually due to a short circuit. The seat switch sends signals to the power seat control module, which moves the seat. When this fault appears, the seat may not move as intended, or the switch might become unresponsive. While not immediately dangerous, it can affect comfort and safety if precise seat positioning is required. Understanding this code helps avoid unnecessary parts replacement and ensures a precise repair.

Common Symptoms for DTC B1719 #

When DTC B1719 is present, you’ll typically notice issues with the driver’s seat movement. The forward motion may be disabled, stuck, or move erratically. Sometimes, the switch might feel hot to the touch or you may hear clicking noises from the seat motor. Here are the most frequent symptoms:

• Driver seat will not move forward
• Seat moves only in reverse, not forward
• Seat switch is unresponsive or intermittently functional
• Blown seat fuse or repeated fuse failures
• Clicking or buzzing noise from under the seat
• Unusual seat position memory errors (in vehicles equipped with memory seats)

Most Likely Causes of DTC B1719 #

This code is most often triggered by an electrical fault. The root cause is usually a wiring issue, but it can also involve the seat switch or the seat control module. Here are the most common causes, ranked by likelihood:

1. Damaged or shorted wiring harness to the seat switch
2. Faulty driver seat forward switch
3. Corroded or loose electrical connectors under the seat
4. Short circuit inside the seat control module
5. Pinched wires due to seat movement or objects under the seat
6. Water intrusion leading to corrosion (especially in flood-affected vehicles)

Step-by-Step Diagnostic for DTC B1719 #

Accurate diagnosis saves time and money. Always follow safety procedures and disconnect the battery when working with seat circuits. Here’s a structured approach:

• Step 1: Scan for additional DTCs and record them; clear all codes, then retest to confirm B1719 returns.
• Step 2: Inspect the seat movement; check if the forward function is inoperative or acting oddly.
• Step 3: Visually inspect the wiring harness under and around the driver’s seat for damage, pinching, or corrosion.
• Step 4: Check electrical connectors for looseness, bent pins, or green/white corrosion.
• Step 5: Using a multimeter, test the voltage at the seat forward switch; look for battery voltage present on the signal wire (should not be).
• Step 6: Unplug the seat switch and test for continuity to ground and battery; locate any shorts.
• Step 7: If no harness faults are found, test the seat switch and seat control module according to the OEM (Original Equipment Manufacturer) service manual.

Possible Repairs for DTC B1719 #

The appropriate repair depends on what the diagnosis reveals. Always use OEM-quality parts and connectors when repairing seat circuits. Here are the most common fixes:

• Repair or replace damaged wiring harness sections
• Replace the driver seat forward switch if faulty
• Clean and tighten electrical connectors, removing any corrosion
• Secure loose wires or reroute pinched harnesses
• Replace the seat control module if internal short is confirmed
• Address sources of water intrusion if corrosion is found

Is It Safe to Drive with DTC B1719? #

Yes, you can generally continue driving with this code. The B1719 fault primarily affects seat adjustment and comfort, not core vehicle safety or drivability. However, if you cannot position the seat correctly, or if the seat moves unexpectedly, it could impact your ability to drive safely. Address the issue as soon as practical, especially if shared drivers need personalized seat positions.

Vehicles Most Frequently Affected by DTC B1719 #

This code appears most often in vehicles equipped with power seats, especially those with advanced seat memory systems. Certain OEMs are more prone due to wiring layouts or switch design. Models commonly affected include:

• Ford F-Series, Explorer, and Fusion (with power seats)
• Toyota Camry, Avalon, and Highlander
• Chevrolet Silverado, Tahoe, and Malibu
• Honda Accord and Pilot (select trims)
• Nissan Altima and Maxima
• Lexus ES and RX series

Common Mistakes & Best Practices with DTC B1719 #

Misdiagnosis can lead to unnecessary replacement of expensive modules or switches. It’s crucial to check the basics first and avoid quick assumptions. Follow these best practices:

• Do not replace the seat switch without testing the harness first
• Always disconnect the battery before probing connectors to avoid accidental airbag deployment
• Check for signs of liquid spills or water under the seat
• Verify repairs by clearing the code and retesting seat function
• Use dielectric grease on connectors to prevent future corrosion

Quick FAQ for DTC B1719 #

Got questions? Here are quick answers to common concerns about this code:

• Q: Will my seat airbags be affected by this code?
• A: No, B1719 only affects seat movement circuits, not airbag deployment.
• Q: Can I repair a damaged wire myself?
• A: If you have basic wiring skills and use quality splice connectors, yes. Otherwise, professional repair is recommended as seat circuits are safety-critical.