AutoCodes – Pontiac – B1343 Pontiac

B1343 Pontiac Code - Recirculation Actuator

Quick Answer

The Instrument Panel Module (IPM) controls the HVAC door actuators to regulate the airflow through the Heating, Ventilation, and Air Conditioning (HVAC) system. Common causes include Faulty Recirculation Actuator, Recirculation Actuator harness is open or shorted, Recirculation Actuator 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: B1343 Pontiac indicates Recirculation Actuator.
Common causes: Common causes include Faulty Recirculation Actuator, Recirculation Actuator harness is open or shorted, Recirculation Actuator 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.

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Code Popularity 844

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 14, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1343 Pontiac Description

The Instrument Panel Module (IPM) controls the HVAC door actuators to regulate the airflow through the Heating, Ventilation, and Air Conditioning (HVAC) system. Each actuator is a 5-wire bi-directional electric motor that incorporates a feedback potentiometer. Ignition 3 voltage, low reference, control, 5-volt reference and position signal circuits enable the actuator to operate. The control circuit uses either a 0, 2.5, or 5-volt signal to command the actuator movement. When the actuator is at rest, the control circuit value is 2.5 volts. A 0 or 5-volt control signal commands the actuator movement in opposite directions. When the actuator shaft rotates, the potentiometer's adjustable contact changes the door position signal between 0-5 volts. The IPM converts the voltage values to count values where one volt is approximately equal to 51 counts. The IPM uses a range of 0-255 counts to index the actuator position. The door position signal voltage is converted to a 0-255 count range. When the module sets a commanded, or targeted value, the control signal is changed to either 0 or 5 volts depending upon the direction that the actuator needs to rotate to reach the commanded value. As the actuator shaft rotates the changing position signal is sent to the module. Once the position signal and the commanded value are the same, the module changes the control signal to 2.5 volts.

OBDII Code B1343 Pontiac - Recirculation Actuator - AutoCodes.com — B1343 Pontiac Code - Recirculation Actuator

What does this mean?

What are the Possible Causes of the DTC B1343 Pontiac?

Faulty Recirculation Actuator
Recirculation Actuator harness is open or shorted
Recirculation Actuator circuit poor electrical connection
Faulty Instrument Panel Module (IPM)

How to Fix the DTC B1343 Pontiac?

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 B1343 Pontiac 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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Need Help with the Code?

Get the B1343 Pontiac code diagnosed by a professional: Find a repair shop in your area

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 B1343 Pontiac Code

1. What is OBDII code B1343 in a Pontiac related to the Recirculation Actuator?

OBDII code B1343 in a Pontiac is related to a fault detected in the Recirculation Actuator circuit.

2. What are common symptoms of a Recirculation Actuator issue associated with code B1343 in a Pontiac?

Common symptoms include inconsistent air conditioning performance, unusual noises from the HVAC system, or the inability to control airflow direction.

3. What are some potential causes of OBDII code B1343 in a Pontiac triggering for the Recirculation Actuator?

Causes can range from a faulty Recirculation Actuator, damaged wiring or connectors, to issues with the HVAC control module.

4. How can I diagnose a Recirculation Actuator problem causing OBDII code B1343 in my Pontiac?

Diagnosing involves checking the Recirculation Actuator for proper operation, inspecting the wiring and connectors for damage, and using a scan tool to retrieve trouble codes.

5. Can I repair a Recirculation Actuator issue triggering code B1343 in my Pontiac myself?

Depending on the exact cause, DIY repairs may be possible such as replacing the Recirculation Actuator, repairing damaged wiring, or resetting the HVAC system.

6. Is it safe to continue driving my Pontiac with OBDII code B1343 related to the Recirculation Actuator?

It is generally not recommended to ignore this issue, as it can lead to further HVAC system malfunctions and discomfort while driving.

7. How much does it typically cost to repair a Recirculation Actuator problem causing OBDII code B1343 in a Pontiac?

The cost can vary based on the exact cause of the issue, but it may range from $100-$400 for parts and labor at a dealership or repair shop.

8. Can a faulty Recirculation Actuator triggering OBDII code B1343 affect other components in my Pontiac's HVAC system?

Yes, a malfunctioning Recirculation Actuator can impact overall climate control performance and potentially lead to issues with other HVAC components.

9. Are there any preventive maintenance tips to avoid OBDII code B1343 related to the Recirculation Actuator in my Pontiac?

Regularly servicing the HVAC system, checking for unusual noises or airflow issues, and addressing any problems promptly can help prevent this code from appearing.

10. Does clearing the OBDII code B1343 related to the Recirculation Actuator in my Pontiac reset the HVAC system?

Clearing the code may reset the system temporarily, but it is important to address the root cause of the issue to prevent the code from reoccurring.

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