AutoCodes – Generic – B1233

B1233 Code - Open In The Driver Side Air Mix Control Motor Circuit

Quick Answer

The Climate Control Unit monitors the Driver Side Air Mix Control Motor. Common causes include Faulty Driver Side Air Mix Control Motor, Driver Side Air Mix Control Motor harness is open or shorted, Driver Side Air Mix Control Motor 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: B1233 indicates Open In The Driver Side Air Mix Control Motor Circuit.
Common causes: Common causes include Faulty Driver Side Air Mix Control Motor, Driver Side Air Mix Control Motor harness is open or shorted, Driver Side Air Mix Control Motor 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 26,686

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 Nov 19, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1233 Description

The Climate Control Unit monitors the Driver Side Air Mix Control Motor. The Climate Control Unit sets the OBDII code when the Driver Side Air Mix Control Motor is not to factory specifications.

OBDII Code B1233 - Open In The Driver Side Air Mix Control Motor Circuit - AutoCodes.com — B1233 Code - Open In The Driver Side Air Mix Control Motor Circuit

What does this mean?

What are the Possible Causes of the DTC B1233?

Faulty Driver Side Air Mix Control Motor
Driver Side Air Mix Control Motor harness is open or shorted
Driver Side Air Mix Control Motor circuit poor electrical connection
Faulty Climate Control Unit

How to Fix the DTC B1233?

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 B1233 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 B1233 code?

Need more information on how to fix the B1233 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1233 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1233 Acura — Open In The Driver Side Air Mix Control Motor Circuit
B1233 Chrysler — PTS Sensor 8 Ring Time Too Short
B1233 Dodge — PTS Sensor 8 Ring Time Too Short
B1233 Honda — Open In The Driver Side Air Mix Control Motor Circuit
B1233 Jeep — PTS Sensor 8 Ring Time Too Short
B1233 RAM — PTS Sensor 8 Ring Time Too Short

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 B1233 Code

What does the OBDII code B1233 indicate?

The OBDII code B1233 indicates an "Open In The Driver Side Air Mix Control Motor Circuit," which means there is a malfunction in the circuit that controls the air mix for the driver's side heating and cooling system.

What are the common symptoms associated with code B1233?

Common symptoms include inconsistent temperature control on the driverâ€™s side, unusual noises coming from the dashboard, or the air conditioning not functioning properly for the driverâ€™s side.

What could cause the B1233 code to appear?

Potential causes include a faulty air mix control motor, wiring issues such as a short or open circuit, poor connections, or a malfunctioning climate control module.

How can I diagnose the B1233 code?

To diagnose the B1233 code, start with a visual inspection of the wiring and connections related to the air mix control motor. Use a multimeter to check for continuity in the circuit and test the motor itself for proper operation.

What are some common repairs for the B1233 code?

Common repairs include replacing the air mix control motor, repairing damaged wiring or connectors, and reprogramming or replacing the climate control module if necessary.

Can I drive my vehicle with the B1233 code?

While you can technically drive the vehicle, itâ€™s not recommended as it may lead to poor temperature regulation, which can be uncomfortable and might cause further damage to the HVAC system.

How do I clear the B1233 code after repairs?

After making the necessary repairs, you can clear the B1233 code using an OBDII scanner. Disconnecting the vehicle's battery for a few minutes may also reset the code, but using a scanner is more reliable.

Is the B1233 code specific to certain vehicle makes and models?

Yes, the B1233 code can be specific to certain makes and models, particularly those with advanced climate control systems. Always refer to your vehicle's service manual for specific diagnostic procedures.

Can the B1233 code affect fuel efficiency?

While the B1233 code primarily affects climate control, if the HVAC system is not functioning properly, it could potentially impact fuel efficiency, especially if the system is working harder than normal to maintain cabin comfort.