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AutoCodes – Chevrolet – B269C Chevrolet

B269C Chevrolet Code - Heater Coolant Pump Control Circuit Low

Quick Answer

The coolant heater pump is controlled by a relay. Common causes include Faulty Heater Coolant Pump, Heater Coolant Pump harness is open or shorted, Heater Coolant 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
B269C Chevrolet indicates Heater Coolant Pump Control Circuit Low.
Common causes
Common causes include Faulty Heater Coolant Pump, Heater Coolant Pump harness is open or shorted, Heater Coolant 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 2,419
How popular is this code, among other codes? Low
What is this?
Table of contents Created and updated by William Orellana on May 29, 2023
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Code B269C Chevrolet Description

The coolant heater pump is controlled by a relay. When operating conditions exist that require coolant flow when the engine is not operating, the Heating, Ventilation, and Air Conditioning (HVAC) control module turns ON the heater coolant pump by applying ground to the relay control circuit which energizes the heater coolant pump relay.
OBDII Code B269C Chevrolet - Heater Coolant Pump Control Circuit Low - AutoCodes.com
B269C Chevrolet Code - Heater Coolant Pump Control Circuit Low
What does this mean?

What are the Possible Causes of the DTC B269C Chevrolet?

  • Faulty Heater Coolant Pump
  • Heater Coolant Pump harness is open or shorted
  • Heater Coolant Pump circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC B269C Chevrolet?

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 B269C Chevrolet 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 B269C Chevrolet code?

Need more information on how to fix the B269C Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B269C Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

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 B269C Chevrolet Code

1. What does the OBDII code B269C mean on a Chevrolet?

The B269C code indicates a problem with the Heater Coolant Pump Control Circuit, specifically that the circuit voltage is lower than expected.

2. What are the common symptoms of the B269C code in a Chevrolet?

Symptoms may include reduced or no cabin heating, coolant pump malfunction, and possible overheating during certain driving conditions.

3. What causes the B269C code to appear?

Common causes include a faulty heater coolant pump, damaged wiring or connectors, a blown fuse, or a malfunctioning control module.

4. Can I drive my Chevrolet with the B269C code?

It is possible to drive, but it’s not recommended as it may lead to poor cabin heating or engine cooling issues, which can cause further damage.

5. How do I diagnose the B269C code in my Chevrolet?

Start by checking the wiring and connectors for damage or corrosion, test the heater coolant pump for proper operation, and inspect the fuse related to the circuit.

6. How can I fix the B269C code on a Chevrolet?

Repairs may include replacing the heater coolant pump, repairing or replacing damaged wiring, cleaning corroded connectors, or replacing a blown fuse.

7. How much does it cost to repair a B269C code in a Chevrolet?

The cost varies depending on the issue, but replacing a heater coolant pump can range from $200 to $500, plus labor, while wiring repairs may cost less.

8. Can a faulty control module cause the B269C code?

Yes, a malfunctioning control module, such as the Body Control Module (BCM), can cause this code if it fails to send the correct signals to the pump.

9. What tools are needed to diagnose the B269C code?

You’ll need an OBDII scanner, a multimeter for testing electrical circuits, and possibly a wiring diagram for your Chevrolet model.

10. Is the B269C code related to engine overheating?

Indirectly, yes. If the heater coolant pump isn’t functioning, it can affect the engine’s cooling system, potentially leading to overheating.

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