B297E Code - Passenger Blend Door Actuator Drive Circuit Open
Quick Answer
Under normal operation, to rotate the blend door actuator clockwise, the Electronic Manual Temperature Control (EMTC) Module or Electronic Automatic Temperature Control (EATC) Module supplies voltage to the blend door actuator motors through the door actuator feed A circuits and supplies ground through the door actuator feed B circuits. Common causes include Stuck or damaged linkage or door, Faulty Blend Door Actuator, Blend Door Actuator harness is open or shorted. 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
- B297E indicates Passenger Blend Door Actuator Drive Circuit Open.
- Common causes
- Common causes include Stuck or damaged linkage or door, Faulty Blend Door Actuator, Blend Door Actuator harness is open or shorted.
- 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 B297E Description
The blend door actuator feedback resistors are supplied a ground from the EMTC module or EATC module by the blend door actuator return circuits and a 5-volt reference voltage on the blend door actuator reference circuits. The EMTC module or EATC module reads the voltage on the blend door actuator feedback circuits to determine the blend door actuator position by the position of the actuator feedback resistor wiper arm.
What are the Possible Causes of the DTC B297E?
- Stuck or damaged linkage or door
- Faulty Blend Door Actuator
- Blend Door Actuator harness is open or shorted
- Blend Door Actuator circuit poor electrical connection
- Electronic Manual Temperature Control (EMTC) Module
- Electronic Automatic Temperature Control (EATC) Module
How to Fix the DTC B297E?
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 B297E 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.
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Information for Specific Makes
- B297E Ford — Passenger Blend Door Actuator Drive Circuit Open
- B297E Lincoln — Passenger Blend Door Actuator Drive Circuit Open
- B297E Mercury — Passenger Blend Door Actuator Drive Circuit Open
Frequently Asked Questions about B297E Code
1. What does the OBDII code B297E mean?
The B297E code indicates an open circuit in the passenger blend door actuator drive, which controls airflow and temperature blending on the passenger side.
2. What are the symptoms of a B297E code?
Common symptoms include inconsistent or no temperature control on the passenger side and unusual noises like clicking or grinding from the HVAC system.
3. What causes the B297E code to appear?
This code can be caused by a faulty blend door actuator, damaged wiring, a poor electrical connection, or a malfunctioning HVAC control module.
4. Can I still drive my car with a B297E code?
Yes, you can still drive the car, but you may experience discomfort due to improper temperature control on the passenger side.
5. How do you diagnose the B297E code?
Diagnosis involves inspecting the blend door actuator, checking the wiring and connectors for damage or corrosion, and testing the HVAC control module for proper operation.
6. How do you fix a B297E code?
Repairs may include replacing the blend door actuator, repairing damaged wiring, cleaning corroded connections, or reprogramming or replacing the HVAC control module.
7. How much does it cost to fix a B297E code?
Repair costs can vary but typically range from $150 to $300 for parts and labor, depending on the vehicle and the exact issue.
8. Can I fix the B297E code myself?
If you have basic mechanical skills, you may be able to replace the blend door actuator or repair damaged wiring yourself. However, professional diagnosis is recommended for complex issues.
9. What tools are needed to fix the B297E code?
You’ll need a multimeter to test electrical connections, basic hand tools to remove the actuator, and potentially an OBDII scanner to clear the code.
10. Will clearing the B297E code solve the problem?
Clearing the code may temporarily turn off the check engine light, but the underlying issue must be repaired to prevent the code from returning.
Discuss the causes and fixes for B297E OBDII Code
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