Engine-CodesGeneric – B1968

B1968 Code - A/C Water Pump Detection Circuit Failure

Quick Answer

The B1968 code indicates a failure in the A/C water pump detection circuit. Common causes include Faulty A/C water pump, Wiring issues in the detection circuit, Malfunctioning control module. 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
B1968 indicates A/C Water Pump Detection Circuit Failure.
Common causes
Common causes include Faulty A/C water pump, Wiring issues in the detection circuit, Malfunctioning control module.
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.
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code B1968 Description

The B1968 code indicates a failure in the A/C water pump detection circuit. The A/C water pump is responsible for circulating coolant through the air conditioning system to help cool down the interior of the vehicle. When this circuit fails, it can lead to issues with the proper functioning of the A/C system, potentially resulting in a lack of cold air being blown into the cabin.

OBDII Code B1968 - A/C Water Pump Detection Circuit Failure
B1968 Code - A/C Water Pump Detection Circuit Failure

Common Causes of B1968

  1. Faulty A/C water pump
  2. Wiring issues in the detection circuit
  3. Malfunctioning control module
  4. Corrosion or damage to electrical connections
  5. Low refrigerant levels

Symptoms of B1968

  1. Lack of cold air blowing from the A/C vents
  2. Overheating of the engine
  3. Strange noises coming from the A/C system
  4. A/C system not turning on at all

How to Fix B1968

  1. Begin by diagnosing the exact cause of the issue using a diagnostic scanner to read the B1968 code and pinpoint the source of the problem.
  2. Inspect the A/C water pump for any signs of damage or malfunction. Replace the pump if necessary.
  3. Check the wiring and electrical connections in the detection circuit for any faults. Repair or replace any damaged components.
  4. Test the control module to ensure it is functioning properly. Replace it if needed.
  5. Refill the refrigerant levels in the A/C system and test the system to ensure proper operation.

Cost to Fix B1968

The cost of repairing a B1968 code can vary depending on the specific cause of the issue and the make and model of the vehicle. On average, the repair costs for this type of issue can range from $200 to $500, including parts and labor. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.

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Code B1968 Information for Specific Makes

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 B1968 Code

1. What are the common symptoms of OBDII code B1968 (A/C Water Pump Detection Circuit Failure)?

- Common symptoms include the air conditioning system not functioning properly, lack of cold air, and potential issues with the water pump.

2. What are the possible causes of OBDII code B1968?

- The code B1968 can be triggered by a faulty A/C water pump, damaged wiring or connectors in the detection circuit, or a malfunctioning control module.

3. How can I diagnose the A/C Water Pump Detection Circuit Failure related to code B1968?

- Diagnosis involves checking the A/C system for proper operation, inspecting the wiring and connectors for any damage, and using a scan tool to retrieve the fault codes.

4. What are the repair options for OBDII code B1968?

- Repair options include replacing the faulty A/C water pump, repairing any damaged wiring or connectors, or reprogramming the control module if necessary.

5. Can I drive my vehicle with OBDII code B1968 active?

- It is not recommended to drive the vehicle with an active B1968 code, as it can lead to further damage to the A/C system and potentially affect the engine's performance.

6. How much does it typically cost to repair OBDII code B1968?

- The cost of repairing OBDII code B1968 can vary depending on the extent of the damage and the specific repairs needed, but it can range from a few hundred to over a thousand dollars.

7. Is OBDII code B1968 a common issue in certain vehicle models?

- Code B1968 related to A/C Water Pump Detection Circuit Failure is more common in vehicles equipped with advanced climate control systems and complex A/C components.

8. Can a DIY enthusiast repair OBDII code B1968 on their own?

- While some DIY enthusiasts may have the skills to diagnose and repair simple electrical issues, dealing with A/C systems and control modules often requires specialized tools and expertise best left to professionals.

9. How long does it usually take to fix OBDII code B1968 at a repair shop?

- The repair time for code B1968 can vary depending on the exact cause of the issue and the availability of parts, but it typically takes a few hours to half a day for a professional technician to diagnose and repair the problem.

10. How can I prevent OBDII code B1968 from occurring in the future?

- Regular maintenance of the A/C system, checking for any signs of wear or damage in the wiring, and promptly addressing any A/C-related issues can help prevent the recurrence of code B1968.

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