What Does B1702 Mean?
This code indicates the Body Control Module (BCM) has detected an open circuit in the driver's seat recline forward switch wiring or switch itself. The BCM monitors the continuity of this switch circuit and sets this code when it detects an incomplete electrical path, meaning the switch signal is not reaching the control module. This prevents the power seat recline-forward function from operating properly.
Common Causes
40%
Faulty or damaged driver seat recline forward switch with internal open circuit
30%
Broken or severed wiring in the harness between the seat switch and BCM, often under the seat rail
20%
Corroded, loose, or damaged connector at the seat switch or BCM connection point
10%
Failed BCM internal switch monitoring circuit or blown fuse in seat control circuit
Diagnostic Steps
1
Step 1: Perform a visual inspection under the driver's seat for damaged wiring, crushed harnesses along the seat rails, or disconnected connectors. Check seat switch connector for corrosion, bent pins, or moisture intrusion.
2
Step 2: Using a digital multimeter, check continuity of the recline forward switch by disconnecting it and testing across the switch terminals while activating the switch manually. A functioning switch should show continuity (near 0 ohms) when pressed and open circuit when released.
3
Step 3: With the switch disconnected, measure resistance from the BCM connector pin (consult wiring diagram for specific pin) back to the switch connector to verify wiring integrity. Reading should be less than 5 ohms; infinite resistance confirms open circuit in wiring.
4
Step 4: Check power and ground supply to the seat switch module using a multimeter. Verify battery voltage on power supply wire and good ground (less than 0.1 ohm to chassis ground).
5
Step 5: If all wiring and connections test good, substitute a known-good seat switch assembly to confirm switch failure. Clear codes and cycle the recline function to verify repair.
Estimated Repair Cost
$75 - $450
Parts + labor, varies by vehicle and location
This code indicates the Body Control Module (BCM) has detected an open circuit in the driver's seat recline forward switch wiring or switch itself. The BCM monitors the continuity of this switch circuit and sets this code when it detects an incomplete electrical path, meaning the switch signal is no...
The most common cause of B1702 (Seat Driver Recline Forward Switch Circuit Open) is: Faulty or damaged driver seat recline forward switch with internal open circuit
Typical repair costs for B1702 range from $75 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to continue driving. This code only affects the convenience feature of powered seat recline adjustment and does not impact vehicle operation or safety systems. Repair at convenience, though manual seat adjustment may be compromised.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B1702 to identify the root cause.
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Quick Info
Category
Body
System
Body Control System (Power Seat)
Difficulty
Type
Manufacturer
Recommended Tools
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