AutoCodes – Pontiac – B3844 Pontiac

B3844 Pontiac Code - Engine Coolant Circulation Pump Circuit

Quick Answer

The Starter/Generator Control Module (SGCM) controls the transmission pump operation by applying voltage to the auxiliary transmission relay control circuit with an internal solid state device called a hybrid pump driver. Common causes include Faulty Engine Coolant Circulation Pump, Engine Coolant Circulation Pump harness is open or shorted, Engine Coolant Circulation Pump 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: B3844 Pontiac indicates Engine Coolant Circulation Pump Circuit.
Common causes: Common causes include Faulty Engine Coolant Circulation Pump, Engine Coolant Circulation Pump harness is open or shorted, Engine Coolant Circulation Pump 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 505

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Mar 23, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3844 Pontiac Description

The Starter/Generator Control Module (SGCM) controls the transmission pump operation by applying voltage to the auxiliary transmission relay control circuit with an internal solid state device called a hybrid pump driver. When the SGCM is commanding the relay ON, the voltage of the control circuit should be high, near 12 volts. When the SGCM is commanding the relay OFF, the voltage potential of the control circuit should be low, near 0 volts. The Diagnostic Trouble Code (DTC) sets when the SGCM determines the state of the auxiliary transmission pump relay control circuit is shorted to ground, open or shorted to power.

OBDII Code B3844 Pontiac - Engine Coolant Circulation Pump Circuit - AutoCodes.com — B3844 Pontiac Code - Engine Coolant Circulation Pump Circuit

What does this mean?

What are the Possible Causes of the DTC B3844 Pontiac?

Faulty Engine Coolant Circulation Pump
Engine Coolant Circulation Pump harness is open or shorted
Engine Coolant Circulation Pump circuit poor electrical connection
Faulty Starter/Generator Control Module (SGCM)

How to Fix the DTC B3844 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 B3844 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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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 B3844 Pontiac Code

1. What are common symptoms of OBDII code B3844 related to the Engine Coolant Circulation Pump Circuit in a Pontiac?

- Common symptoms include engine overheating, low coolant warning light, and poor heater performance.

2. What are possible causes of OBDII code B3844 in a Pontiac indicating an issue with the Engine Coolant Circulation Pump Circuit?

- Possible causes include a faulty circulation pump, damaged wiring or connectors, low coolant levels, or a malfunctioning thermostat.

3. How can I diagnose the issue causing OBDII code B3844 in my Pontiac related to the Engine Coolant Circulation Pump Circuit?

- Use a diagnostic scanner to retrieve the specific trouble code, visually inspect the circulation pump and related components, test the pump's electrical connections, and check coolant levels.

4. Can a faulty Engine Coolant Circulation Pump cause other problems besides triggering OBDII code B3844 in a Pontiac?

- Yes, a faulty pump can lead to engine overheating, decreased fuel efficiency, poor heating in the cabin, and potential damage to the engine.

5. What are some repair tips for addressing OBDII code B3844 in a Pontiac associated with the Engine Coolant Circulation Pump Circuit?

- Start by checking the circulation pump for proper operation, inspect and repair any damaged wiring or connectors, ensure proper coolant levels, and replace the pump if necessary.

6. Is it safe to continue driving my Pontiac with OBDII code B3844 related to the Engine Coolant Circulation Pump Circuit?

- It is not recommended to continue driving with this code as it can lead to engine overheating and potential damage. It's best to address the issue promptly.

7. How much does it typically cost to repair OBDII code B3844 in a Pontiac linked to the Engine Coolant Circulation Pump Circuit?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from $200 to $800, including parts and labor.

8. Can I reset the OBDII code B3844 in my Pontiac related to the Engine Coolant Circulation Pump Circuit without fixing the underlying issue?

- Resetting the code without addressing the underlying problem will only temporarily clear the warning light. The issue will likely reappear until properly repaired.

9. Are there any preventive maintenance steps I can take to avoid OBDII code B3844 in my Pontiac related to the Engine Coolant Circulation Pump Circuit?

- Regularly inspecting the cooling system, maintaining proper coolant levels, and addressing any leaks or unusual noises promptly can help prevent issues leading to this trouble code.

10. How long does it take to repair OBDII code B3844 in a Pontiac associated with the Engine Coolant Circulation Pump Circuit?

- The repair time can vary based on the specific cause of the issue and the expertise of the technician. It may take anywhere from 1 to 4 hours to diagnose and fix the problem.