What Does B1264 Mean?
This code indicates a malfunction in the servo motor circuit that controls a foot-operated or foot-level component, typically related to climate control flaps, pedal position sensors, or adjustable pedal systems. The Body Control Module (BCM) has detected an electrical fault in the servo motor circuit, which may include open circuits, short circuits, excessive resistance, or mechanical binding preventing proper motor operation. This is a manufacturer-specific code, so the exact component varies by vehicle make and model.
Common Causes
45%
Faulty servo motor with internal short circuit, open winding, or mechanical seizure
30%
Damaged wiring harness or corroded connector pins between BCM and servo motor
15%
Poor ground connection or broken ground wire for servo motor circuit
10%
Failed Body Control Module (BCM) output driver for servo motor control
Diagnostic Steps
1
Step 1: Perform visual inspection of the servo motor area, checking for physical damage, disconnected connectors, damaged wiring, or signs of water intrusion. Verify connector is fully seated and pins are not corroded or pushed back.
2
Step 2: Using a digital multimeter, check power supply voltage at the servo motor connector (key on, engine off) - should read battery voltage (typically 12-14V). Check ground circuit for continuity to chassis ground (less than 1 ohm resistance).
3
Step 3: Disconnect servo motor connector and measure resistance across motor terminals - typical DC servo motors show 5-100 ohms. If open (infinite resistance) or shorted (near zero resistance), motor is faulty. Test for shorts to ground on both power and control wires with harness disconnected.
4
Step 4: If wiring and motor resistance are correct, command actuator operation using bi-directional controls on scan tool while monitoring current draw (should be 0.5-3 amps typically). Listen for motor operation and observe if mechanism moves freely without binding. If motor does not operate or draws excessive current, replace servo motor and retest system functionality.
Estimated Repair Cost
$150 - $600
Parts + labor, varies by vehicle and location
This code indicates a malfunction in the servo motor circuit that controls a foot-operated or foot-level component, typically related to climate control flaps, pedal position sensors, or adjustable pedal systems. The Body Control Module (BCM) has detected an electrical fault in the servo motor circu...
The most common cause of B1264 (Servo Motor Foot Circuit Failure) is: Faulty servo motor with internal short circuit, open winding, or mechanical seizure
Typical repair costs for B1264 range from $150 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
This code typically does not affect vehicle safety or drivability and it is safe to continue driving. The failure may affect comfort features such as climate control airflow direction or adjustable pedal position, but does not impact critical vehicle operation.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B1264 to identify the root cause.
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Quick Info
Category
Body
System
Body Control and Comfort Systems
Difficulty
Type
Manufacturer
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