AutoCodes – Generic – B2468

B2468 Code - Auxiliary Heater Coolant Pump Circuit Short to Ground

Quick Answer

The Powertrain Control Module (PCM) monitors the Auxiliary Heater Coolant Pump. Common causes include Faulty Auxiliary Heater Coolant Pump, Auxiliary Heater Coolant Pump harness is open or shorted, Auxiliary 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: B2468 indicates Auxiliary Heater Coolant Pump Circuit Short to Ground.
Common causes: Common causes include Faulty Auxiliary Heater Coolant Pump, Auxiliary Heater Coolant Pump harness is open or shorted, Auxiliary 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 5,647

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 Dec 09, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2468 Description

The Powertrain Control Module (PCM) monitors the Auxiliary Heater Coolant Pump. The PCM sets the OBDII code when the Auxiliary Heater Coolant Pump is not to factory specifications.

OBDII Code B2468 - Auxiliary Heater Coolant Pump Circuit Short to Ground - AutoCodes.com — B2468 Code - Auxiliary Heater Coolant Pump Circuit Short to Ground

What does this mean?

What are the Possible Causes of the DTC B2468?

Faulty Auxiliary Heater Coolant Pump
Auxiliary Heater Coolant Pump harness is open or shorted
Auxiliary Heater Coolant Pump circuit poor electrical connection

How to Fix the DTC B2468?

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 B2468 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 B2468 code?

Need more information on how to fix the B2468 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2468 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 B2468 Code

1. What are the common symptoms of OBDII code B2468, Auxiliary Heater Coolant Pump Circuit Short to Ground?

The common symptoms include a non-functioning auxiliary heater, a lack of heat in the cabin, and possibly an illuminated check engine light on the dashboard.

2. What causes the OBDII code B2468, Auxiliary Heater Coolant Pump Circuit Short to Ground?

This code is typically caused by a short circuit in the wiring harness of the auxiliary heater coolant pump, leading to a grounding issue.

3. How can I diagnose the OBDII code B2468?

Diagnosing this code involves inspecting the wiring harness for any visible damage, testing the continuity of the wires, and checking the auxiliary heater coolant pump for proper operation.

4. What are the potential repair options for OBDII code B2468?

Repair options include repairing the damaged wiring harness, replacing the auxiliary heater coolant pump if necessary, and clearing the trouble codes using an OBDII scanner.

5. Can I drive my vehicle with the OBDII code B2468 present?

It is not recommended to drive the vehicle with this code present, as it can lead to further issues with the auxiliary heater system and potentially cause overheating problems.

6. How much does it typically cost to repair OBDII code B2468?

The cost of repair can vary depending on the extent of the damage and whether any components need to be replaced. It is advisable to consult a mechanic for an accurate estimate.

7. Is OBDII code B2468 a common issue in certain vehicle makes and models?

This code is more commonly seen in vehicles equipped with auxiliary heater systems, particularly in colder climates where the heater is used frequently.

8. Can I prevent OBDII code B2468 from occurring in the future?

To prevent this code from occurring, it's essential to ensure the auxiliary heater system is properly maintained, including regular inspections of the wiring harness and components.

9. Will resetting the OBDII code B2468 make it go away permanently?

Simply resetting the code without addressing the underlying issue will not make it go away permanently. It's crucial to diagnose and repair the root cause of the problem to prevent its recurrence.

10. Is it safe to attempt to repair OBDII code B2468 myself?

While some DIY enthusiasts may be able to address this issue, it is recommended to seek assistance from a qualified mechanic, especially when dealing with electrical components like the auxiliary heater system.