AutoCodes – Chevrolet – B269A 2018 Chevrolet Silverado

B269A 2018 Chevrolet Silverado Code - Heater Coolant Pump Control Circuit Open

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: B269A 2018 Chevrolet Silverado indicates Heater Coolant Pump Control Circuit Open.
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 293

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 May 29, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B269A 2018 Chevrolet Silverado 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 B269A 2018 Chevrolet Silverado - Heater Coolant Pump Control Circuit Open - AutoCodes.com — B269A 2018 Chevrolet Silverado Code - Heater Coolant Pump Control Circuit Open

What does this mean?

What are the Possible Causes of the DTC B269A 2018 Chevrolet Silverado?

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 B269A 2018 Chevrolet Silverado?

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 B269A 2018 Chevrolet Silverado 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 B269A 2018 Chevrolet Silverado code?

Need more information on how to fix the B269A 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 B269A 2018 Chevrolet Silverado Code

1. What does the OBDII code B269A mean on a 2018 Chevrolet Silverado?

Code B269A indicates an issue with the Heater Coolant Pump Control Circuit, specifically an open circuit, which means thereâ€™s a disruption in the electrical connection.

2. What are the symptoms of code B269A in a 2018 Chevrolet Silverado?

Common symptoms include reduced cabin heating, erratic or non-functioning HVAC system, and potentially the check engine light or a specific HVAC-related warning on the dashboard.

3. What causes code B269A to trigger in a 2018 Chevrolet Silverado?

Possible causes include a faulty heater coolant pump, a damaged or corroded connector, a broken or frayed wire in the control circuit, or a malfunctioning HVAC control module.

4. Can I still drive my 2018 Chevrolet Silverado with code B269A?

While the vehicle may still be drivable, reduced heating performance could cause discomfort in colder conditions, and ignoring the issue may lead to further damage to the HVAC system.

5. How do I diagnose the B269A code on my 2018 Chevrolet Silverado?

Start by inspecting the heater coolant pump wiring and connectors for damage or corrosion. Use a multimeter to check for continuity in the circuit. If no issues are found, test the pump itself and the control module.

6. How is the B269A code repaired in a 2018 Chevrolet Silverado?

Repairs may involve replacing the heater coolant pump, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the HVAC control module if necessary.

7. How much does it cost to fix the B269A code on a 2018 Chevrolet Silverado?

The repair cost can vary, but replacing a heater coolant pump typically ranges from $200 to $500, depending on labor rates and parts pricing.

8. Can a blown fuse cause the B269A code in my 2018 Chevrolet Silverado?

Yes, a blown fuse in the heater coolant pump circuit can disrupt power flow, leading to the "circuit open" error.

9. Is the heater coolant pump part of the engine cooling system in a 2018 Chevrolet Silverado?

No, the heater coolant pump is part of the HVAC system and is designed to circulate coolant to the heater core for cabin heating, separate from the main engine cooling system.

10. Will clearing the B269A code fix the problem on my 2018 Chevrolet Silverado?

Clearing the code might temporarily remove it, but the underlying issue must be addressed to prevent the code from returning. Always fix the root cause first.