B2957 Lincoln Code - Blend Door Open Circuit Failure Or Short
Quick Answer
Under normal operation, to rotate the mode door actuator clockwise, the Electric Manual Temperature Control (EMTC) module or Electronic Automatic Temperature Control (EATC) module supplies voltage to the Blend, Floor/Defrost and Panel mode door actuator motors through the door actuator feed B circuits, and supplies ground through the door actuator feed A circuits. Common causes include Faulty Blend Door Actuator Motor, Blend Door Actuator Motor harness is open or shorted, Blend Door Actuator Motor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- B2957 Lincoln indicates Blend Door Open Circuit Failure Or Short.
- Common causes
- Common causes include Faulty Blend Door Actuator Motor, Blend Door Actuator Motor harness is open or shorted, Blend Door Actuator Motor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code B2957 Lincoln Description
The mode door actuator feedback resistors are supplied a ground from the EMTC module or EATC module by the mode door actuator return circuits and a 5-volt reference voltage on the mode door actuator reference circuits. The EMTC module or EATC module reads the voltage on the mode door actuator feedback circuits to determine the mode door actuator position by the position of the actuator feedback resistor wiper arm.
What are the Possible Causes of the DTC B2957 Lincoln?
- Faulty Blend Door Actuator Motor
- Blend Door Actuator Motor harness is open or shorted
- Blend Door Actuator Motor circuit poor electrical connection
- Faulty Electric Manual Temperature Control (EMTC) Module or Electronic Automatic Temperature Control (EATC) Module
How to Fix the DTC B2957 Lincoln?
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 B2957 Lincoln 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 B2957 Lincoln code?
Need more information on how to fix the B2957 Lincoln code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B2957 Lincoln code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about B2957 Lincoln Code
1. What are the common symptoms of OBDII code B2957 in a Lincoln vehicle?
- Common symptoms include inconsistent temperature control inside the vehicle, air conditioning or heating issues, and clicking or tapping noises from the HVAC system.
2. What does the OBDII code B2957 indicate in a Lincoln vehicle?
- This code indicates a blend door open circuit failure or short in the HVAC (heating, ventilation, and air conditioning) system.
3. What are the possible causes of OBDII code B2957 in a Lincoln?
- The code B2957 can be caused by a malfunctioning blend door actuator, damaged wiring or connectors in the HVAC system, or a faulty blend door itself.
4. How can I diagnose the OBDII code B2957 in my Lincoln?
- Diagnosing this code typically involves using a scan tool to retrieve the specific fault code, checking the blend door actuator for proper operation, and inspecting the wiring and connectors for any damage.
5. Can I drive my Lincoln with the OBDII code B2957 present?
- While it may be possible to drive with this code present, it is not recommended as it can lead to further HVAC system issues and discomfort while driving.
6. How can I repair OBDII code B2957 in my Lincoln?
- Repairing this code may involve replacing the faulty blend door actuator, repairing damaged wiring or connectors, or replacing the blend door itself if necessary.
7. Are there any DIY tips for fixing OBDII code B2957 in a Lincoln?
- DIY tips may include checking for loose or damaged wiring, ensuring proper connection of the blend door actuator, and following a repair manual specific to your Lincoln model.
8. Is it common for the blend door to fail in Lincoln vehicles?
- Blend door issues are relatively common in Lincoln vehicles, especially in older models or vehicles with high mileage due to wear and tear on the HVAC system components.
9. How much does it typically cost to repair OBDII code B2957 in a Lincoln at a mechanic or dealership?
- The cost of repair can vary depending on the exact cause of the issue, but it may range from $200 to $500 or more, including parts and labor.
10. Can resetting the OBDII code B2957 clear the issue temporarily?
- Resetting the code may temporarily clear the issue, but if the underlying problem such as a faulty blend door actuator or wiring remains unresolved, the code is likely to reappear.
Discuss the causes and fixes for B2957 Lincoln OBDII Code
Code B2957 Lincoln comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
