B24C3 Code - Blower Motor Feedback
Quick Answer
The Diagnostic Trouble Code (DTC) is set when A/C Auto Amplifier detects a short or open circuit of the Blower Motor Feedback drive signal. Common causes include Faulty Variable Blower Control, Variable Blower Control harness is open or shorted, Variable Blower Control 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
- B24C3 indicates Blower Motor Feedback.
- Common causes
- Common causes include Faulty Variable Blower Control, Variable Blower Control harness is open or shorted, Variable Blower Control 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 B24C3 Description
What are the Possible Causes of the DTC B24C3?
- Faulty Variable Blower Control
- Variable Blower Control harness is open or shorted
- Variable Blower Control circuit poor electrical connection
- Faulty A/C Auto Amplifier
How to Fix the DTC B24C3?
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 B24C3 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 B24C3 code?
Need more information on how to fix the B24C3 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B24C3 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- B24C3 Infiniti — Blower Motor Feedback
- B24C3 Nissan — Blower Motor Feedback
Frequently Asked Questions about B24C3 Code
1. What does the OBDII code B24C3 mean?
The B24C3 code refers to a fault in the blower motor feedback circuit, indicating the system is not receiving proper feedback from the blower motor.
2. What are common symptoms of code B24C3?
Symptoms may include the blower motor not functioning, inconsistent airflow, inability to control fan speed, or a climate control system error message.
3. What causes the B24C3 blower motor feedback code to appear?
Common causes include a faulty blower motor, damaged wiring or connectors in the feedback circuit, a malfunctioning blower motor resistor, or a defective HVAC control module.
4. Can I still drive with a B24C3 code?
Yes, you can still drive, but your climate control system may not work properly, leading to discomfort or reduced visibility in extreme weather conditions.
5. How do I diagnose the B24C3 code?
Diagnosis involves checking the blower motor, inspecting wiring and connectors for damage, testing the blower motor resistor, and verifying proper operation of the HVAC control module.
6. What tools are needed to fix the B24C3 code?
You’ll typically need a multimeter, an OBDII scanner, and basic automotive tools like screwdrivers and pliers for inspecting and repairing the blower motor circuit.
7. How do you fix the B24C3 code?
Repairs may include replacing the blower motor, repairing damaged wiring or connectors, replacing the blower motor resistor, or reprogramming/replacing the HVAC control module.
8. How much does it cost to repair a B24C3 code?
The cost can vary widely, ranging from $50 to $400, depending on whether you need to replace the blower motor, resistor, or HVAC control module.
9. Can a blown fuse cause the B24C3 code?
While a blown fuse may cause the blower motor to stop working, it is not the usual cause of the B24C3 code, which specifically relates to feedback from the blower motor.
10. How can I prevent the B24C3 code from occurring again?
Regular maintenance, such as inspecting electrical connections and keeping the blower motor free of debris, can help prevent this code from reappearing.
Discuss the causes and fixes for B24C3 OBDII Code
Code B24C3 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.
