AutoCodes – Generic – B0414

B0414 Code - Temperature Control Left Feedback Circuit Actuator Range/Performance

Quick Answer

The Heating, Ventilation, and Air Conditioning (HVAC) Control Module controls the HVAC door actuators to regulate the airflow through the HVAC system. Common causes include Faulty Left Air Temperature Actuator, Left Air Temperature Actuator harness is open or shorted, Left Air Temperature Actuator circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B0414 indicates Temperature Control Left Feedback Circuit Actuator Range/Performance.
Common causes: Common causes include Faulty Left Air Temperature Actuator, Left Air Temperature Actuator harness is open or shorted, Left Air Temperature Actuator circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 7,453

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 11, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0414 Description

The Heating, Ventilation, and Air Conditioning (HVAC) Control Module controls the HVAC door actuators to regulate the airflow through the HVAC system. Each actuator consists of a stepper motor, a logic circuit, and a potentiometer. The potentiometer inside the door actuator allows the module to monitor the current position of the actuator drive shaft. The module supplies a 5-volt source voltage to the potentiometer on the 5-volt reference circuit. The module supplies ground to the potentiometer through the low reference circuit. The HVAC control module monitors the voltage drop across the potentiometer on the door position signal circuit. When the actuator shaft rotates, the voltage on the door position signal circuit changes. The module converts the voltage value to a count value where 1-volt is approximately equal to 51 counts. The HVAC control module calibrates the travel range of the HVAC door actuators when it is initially powered by the battery positive voltage circuit. During calibration, the module commands the actuators in each direction until door travel is stopped. The module stores the minimum door positions and the maximum door positions of each actuator into memory. The total travel range is calculated by subtracting the minimum door position from the maximum door position.

OBDII Code B0414 - Temperature Control Left Feedback Circuit Actuator Range/Performance - AutoCodes.com — B0414 Code - Temperature Control Left Feedback Circuit Actuator Range/Performance

What does this mean?

What are the Possible Causes of the DTC B0414?

Faulty Left Air Temperature Actuator
Left Air Temperature Actuator harness is open or shorted
Left Air Temperature Actuator circuit poor electrical connection
Faulty Heating, Ventilation, and Air Conditioning (HVAC) Control Module

How to Fix the DTC B0414?

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 B0414 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 B0414 code?

Need more information on how to fix the B0414 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0414 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B0414 Buick — Temperature Control Left Feedback Circuit Actuator Range/Performance
B0414 Cadillac — Temperature Control Left Feedback Circuit Actuator Range/Performance
B0414 Chevrolet — Temperature Control Left Feedback Circuit Actuator Range/Performance
B0414 GMC — Temperature Control Left Feedback Circuit Actuator Range/Performance
B0414 Pontiac — Temperature Control Left Feedback Circuit Actuator Range/Performance
B0414 Saturn — Temperature Control Left Feedback Circuit Actuator Range/Performance

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 B0414 Code

1. What are the common symptoms of OBDII code B0414?

- The common symptoms of OBDII code B0414 include issues with the temperature control on the left side of the vehicle, such as inconsistent air temperature output or the inability to adjust the temperature.

2. What are the possible causes of OBDII code B0414?

- Possible causes of OBDII code B0414 include a faulty temperature control actuator, wiring issues, a malfunctioning HVAC control module, or a problem with the temperature sensor.

3. How can I diagnose the OBDII code B0414?

- To diagnose OBDII code B0414, you can use an OBDII scanner to retrieve the code and then inspect the temperature control actuator, check the wiring for any damage, and test the HVAC control module and temperature sensor for proper functioning.

4. How can I repair OBDII code B0414?

- Repairing OBDII code B0414 may involve replacing the faulty temperature control actuator, repairing or replacing damaged wiring, resetting the HVAC control module, or replacing the temperature sensor if necessary.

5. Can I drive my vehicle with OBDII code B0414?

- It is not recommended to drive your vehicle with OBDII code B0414, as it can affect the proper functioning of the temperature control system, leading to discomfort while driving and potentially causing further damage.

6. Will OBDII code B0414 cause my check engine light to illuminate?

- OBDII code B0414 may not directly cause the check engine light to illuminate, but it can trigger a diagnostic trouble code related to the HVAC system, which may illuminate the check engine light or HVAC warning light.

7. How much does it typically cost to repair OBDII code B0414?

- The cost to repair OBDII code B0414 can vary depending on the specific cause of the issue, but it may range from $100 to $500 for parts and labor, depending on the extent of the repair needed.

8. Can OBDII code B0414 be a recurring issue?

- OBDII code B0414 can be a recurring issue if the underlying cause, such as a faulty temperature control actuator or wiring problem, is not properly addressed during the repair process.

9. Are there any preventive measures to avoid OBDII code B0414 in the future?

- To prevent OBDII code B0414 in the future, it is recommended to perform regular maintenance on your vehicle's HVAC system, including checking for any unusual temperature control issues and addressing them promptly.

10. Is it possible to clear OBDII code B0414 without repairing the issue?

- While you can clear OBDII code B0414 using an OBDII scanner, it is not recommended to do so without addressing the underlying problem, as it may lead to recurring issues and potentially affect the vehicle's performance.