Engine-Codes.com
Engine-Codes – Generic – B1967

B1967 Code - A/C Post Heater Sensor Circuit Short To Ground

Quick Answer

The B1967 diagnostic trouble code (DTC) indicates a problem with the A/C post heater sensor circuit shorted to ground. Common causes include Wiring or connector damage leading to a short to ground, Faulty A/C post heater sensor, Corrosion or moisture in the sensor circuit. 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
B1967 indicates A/C Post Heater Sensor Circuit Short To Ground.
Common causes
Common causes include Wiring or connector damage leading to a short to ground, Faulty A/C post heater sensor, Corrosion or moisture in the sensor circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code B1967 Description

The B1967 diagnostic trouble code (DTC) indicates a problem with the A/C post heater sensor circuit shorted to ground. This means that there is an issue with the circuit that monitors the temperature of the A/C post heater, which is responsible for heating the air that is blown into the vehicle's cabin when the A/C is in use. When this circuit is shorted to ground, it can disrupt the proper functioning of the A/C system, leading to inadequate heating or cooling of the air inside the vehicle.

OBDII Code B1967 - A/C Post Heater Sensor Circuit Short To Ground
B1967 Code - A/C Post Heater Sensor Circuit Short To Ground

Common Causes of B1967

  1. Wiring or connector damage leading to a short to ground
  2. Faulty A/C post heater sensor
  3. Corrosion or moisture in the sensor circuit
  4. Electrical issues within the HVAC system
  5. Faulty control module responsible for monitoring the sensor

Symptoms of B1967

  1. Inconsistent temperature control inside the vehicle
  2. Poor heating or cooling performance from the A/C system
  3. Foggy windows when the A/C is in use
  4. A/C system may not respond to temperature adjustments
  5. Check Engine Light may illuminate on the dashboard

How to Fix B1967

  1. Begin by diagnosing the exact cause of the short to ground in the A/C post heater sensor circuit using a multimeter and wiring diagrams.
  2. Inspect the wiring and connectors for any damage, corrosion, or loose connections. Repair or replace as necessary.
  3. Test the A/C post heater sensor for proper functionality. Replace if found to be faulty.
  4. Clear the DTC from the vehicle's system using a scan tool.
  5. Test the A/C system to ensure that the issue has been resolved and that the temperature control is functioning correctly.

Cost to Fix B1967

The typical repair costs for addressing a code like B1967 can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, replacing a faulty A/C post heater sensor or repairing wiring/connectors may cost between $150 to $300, including parts and labor. However, the total cost can increase if additional components need to be replaced or if there are underlying electrical issues within the HVAC system. It's recommended to consult with a professional mechanic for a more accurate estimate based on the specific circumstances of the vehicle in question. Labor rates at auto repair shops can vary, so it's advisable to inquire about rates in your area for a more precise cost estimate.

Need more information about the B1967 code?

Need more information on how to fix the B1967 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1967 code diagnosed by a professional: Find a repair shop in your area

Code B1967 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 B1967 Code

1. What does the OBDII code B1967 mean?

Code B1967 indicates a short-to-ground issue in the A/C post heater sensor circuit, which monitors the temperature of air after it passes through the heater core.

2. What are the common symptoms of code B1967?

Symptoms may include poor HVAC performance, inability to control cabin temperature effectively, or the A/C or heater system not functioning properly.

3. What causes the B1967 code to appear?

Common causes include damaged wiring, a shorted post heater sensor, corroded electrical connectors, or a fault in the HVAC control module.

4. Can code B1967 cause damage to my vehicle?

While it won’t directly damage your vehicle, it can lead to discomfort due to improper cabin temperature control and may stress other HVAC components over time.

5. How can I diagnose the cause of code B1967?

Start by inspecting the wiring and connectors for the post heater sensor. Use a multimeter to check for continuity and look for short circuits. Test the sensor itself and ensure the HVAC control module is functioning properly.

6. Can I drive my car with code B1967 active?

Yes, the vehicle is typically drivable, but you may experience issues with heating or cooling, which could impact comfort and visibility in extreme weather conditions.

7. How do I fix the B1967 error code?

Repairs may include replacing the post heater sensor, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming or replacing the HVAC control module.

8. How much does it cost to repair code B1967?

The cost depends on the specific issue. Replacing the sensor or repairing wiring may cost $50-$200, while HVAC module repairs could be $300-$800.

9. Can a faulty A/C post heater sensor trigger other OBDII codes?

Yes, a malfunctioning sensor or wiring issue might trigger related HVAC codes, depending on how the system is affected.

10. How do I prevent the B1967 code from recurring?

Regularly inspect and maintain your vehicle’s HVAC system, check for signs of corrosion or damage in wiring, and address any HVAC issues promptly to prevent further problems.

Discuss the causes and fixes for B1967 OBDII Code

Submit a New Comment

Code B1967 comments

No comments found for this page.