AutoCodes – Generic – B1264

B1264 Code - Floor Door Actuator Failure

Quick Answer

Under normal operation, the panel/defrost and floor door actuator motors are supplied voltage or ground through the circuit, depending on desired actuator rotation, by the Electronic Automatic Temperature Control (EATC) module. Common causes include Faulty Floor Door Actuator, Floor Door Actuator harness is open or shorted, Floor Door Actuator circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means: B1264 indicates Floor Door Actuator Failure.
Common causes: Common causes include Faulty Floor Door Actuator, Floor Door Actuator harness is open or shorted, Floor Door Actuator circuit poor electrical connection.
Severity: Moderate - service should be scheduled soon.
Can I drive?: The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

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Code Popularity 14,491

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 29, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1264 Description

Under normal operation, the panel/defrost and floor door actuator motors are supplied voltage or ground through the circuit, depending on desired actuator rotation, by the Electronic Automatic Temperature Control (EATC) module. The EATC module then supplies the appropriate voltage or ground to the other side of the actuator motor. The panel/defrost and floor door actuator feedback resistors are supplied a ground and a 5-volt reference voltage from the EATC module. The EATC module reads the voltage on the circuit to determine the actuator position by the position of the actuator feedback resistor wiper arm.

OBDII Code B1264 - Floor Door Actuator Failure - AutoCodes.com — B1264 Code - Floor Door Actuator Failure

What does this mean?

What are the Possible Causes of the DTC B1264?

Faulty Floor Door Actuator
Floor Door Actuator harness is open or shorted
Floor Door Actuator circuit poor electrical connection
Faulty Electronic Automatic Temperature Control (EATC) Module

How to Fix the DTC B1264?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1264 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B1264 code?

Need more information on how to fix the B1264 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1264 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1264 Buick — Floor Door Actuator Failure
B1264 Cadillac — Floor Door Actuator Failure
B1264 Chevrolet — Floor Door Actuator Failure
B1264 GMC — Floor Door Actuator Failure

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B1264 Code

1. What are the common symptoms of OBDII code B1264 (Floor Door Actuator Failure)?

- Common symptoms include inconsistent air distribution from the HVAC system, difficulty adjusting the temperature, and unusual noises coming from the floor vents.

2. What are the typical causes of the B1264 code indicating Floor Door Actuator Failure?

- The code B1264 often indicates a failed or malfunctioning floor door actuator, which may be caused by a faulty actuator motor, electrical issues, or physical obstructions blocking the actuator's movement.

3. How can I diagnose OBDII code B1264 related to Floor Door Actuator Failure?

- Diagnosis typically involves using an OBDII scanner to retrieve the specific code, followed by inspecting the floor door actuator and related components for any visible damage or obstructions.

4. Can I continue driving my vehicle with the B1264 code present?

- While the vehicle may still be operable with the B1264 code, it is recommended to address the issue promptly to ensure proper functioning of the HVAC system and maintain interior comfort.

5. Is it possible to repair the Floor Door Actuator myself?

- Repairing the floor door actuator may be possible for those with automotive repair experience and the necessary tools. However, it is recommended to consult a professional mechanic for accurate diagnosis and repair.

6. How much does it typically cost to fix the Floor Door Actuator Failure causing the B1264 code?

- The cost of repairing the Floor Door Actuator can vary depending on the extent of the issue, labor rates, and the cost of replacement parts. It's advisable to obtain quotes from different mechanics or repair shops.

7. Are there any preventive measures to avoid OBDII code B1264 in the future?

- Regular maintenance of the HVAC system, including checking for proper airflow and addressing any unusual noises promptly, can help prevent issues leading to the B1264 code.

8. Can a faulty cabin air filter cause the B1264 code to appear?

- While a clogged or dirty cabin air filter can impact HVAC system performance, it is unlikely to directly trigger the B1264 code related to Floor Door Actuator Failure.

9. Will resetting the OBDII system clear the B1264 code temporarily?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing the Floor Door Actuator Failure is not addressed, the code is likely to reappear.

10. How long does it typically take to repair the Floor Door Actuator associated with the B1264 code?

- The repair time can vary based on the exact cause of the issue and the complexity of accessing and replacing the floor door actuator. On average, the repair may take a few hours to complete.