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Engine-Codes – Generic – B1979

B1979 Code - Passenger Seat Rearward Switch Circuit Short To Battery

Quick Answer

The B1979 diagnostic trouble code indicates a problem with the passenger seat rearward switch circuit shorting to the battery. Common causes include Damaged wiring in the seat adjustment circuit, Faulty passenger seat rearward switch, Short circuit in the wiring harness. 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
B1979 indicates Passenger Seat Rearward Switch Circuit Short To Battery.
Common causes
Common causes include Damaged wiring in the seat adjustment circuit, Faulty passenger seat rearward switch, Short circuit in the wiring harness.
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 07, 2024
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Code B1979 Description

The B1979 diagnostic trouble code indicates a problem with the passenger seat rearward switch circuit shorting to the battery. This means that there is an electrical issue in the circuit that controls the rearward movement of the passenger seat, causing it to short circuit with the vehicle's battery. This can result in the seat being unable to move backward or moving uncontrollably, leading to discomfort for the passenger and potential safety hazards.

OBDII Code B1979 - Passenger Seat Rearward Switch Circuit Short To Battery
B1979 Code - Passenger Seat Rearward Switch Circuit Short To Battery

Common Causes of B1979

  1. Damaged wiring in the seat adjustment circuit
  2. Faulty passenger seat rearward switch
  3. Short circuit in the wiring harness
  4. Malfunctioning control module
  5. Corrosion in the electrical connections

Symptoms of B1979

  1. Inability to adjust the passenger seat backward
  2. Passenger seat moving backward uncontrollably
  3. Check engine light illuminated on the dashboard
  4. Burning smell from the seat adjustment area
  5. Intermittent operation of the seat adjustment feature

How to Fix B1979

  1. Begin by diagnosing the exact cause of the issue using a diagnostic scanner to retrieve the trouble codes and perform electrical testing on the seat adjustment circuit.
  2. Inspect the wiring harness and connections for any signs of damage, corrosion, or short circuits, and repair or replace as necessary.
  3. Test the passenger seat rearward switch for proper functionality and replace if found to be faulty.
  4. Check the control module for any malfunctions and replace if needed.
  5. Clear the trouble codes and test the seat adjustment feature to ensure it is functioning correctly.

Cost to Fix B1979

The cost of repairing a passenger seat rearward switch circuit short to battery issue can vary depending on the specific cause of the problem and the extent of the repairs needed. On average, the parts required for this repair can range from $50 to $200, while the labor costs can range from $100 to $300. Overall, the total repair cost is estimated to be between $150 and $500. However, it's important to note that these are rough estimates, and actual costs may vary based on factors such as the vehicle's make and model, the location of the repair shop, and the specific diagnosis and repair procedures required. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate tailored to your vehicle's needs.

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Code B1979 Information for Specific Makes

  • B1979 Chrysler — Power Liftgate Latch Cinch Sector Switch Performance
  • B1979 Dodge — Power Liftgate Latch Cinch Sector Switch Performance
  • B1979 Jeep — Power Liftgate Latch Cinch Sector Switch Performance
  • B1979 RAM — Power Liftgate Latch Cinch Sector Switch Performance
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 B1979 Code

1. What are the common symptoms of OBDII code B1979 Passenger Seat Rearward Switch Circuit Short To Battery?

The common symptoms include inoperative passenger seat rearward adjustment, malfunctioning seat controls, and possible illumination of the airbag warning light.

2. What causes the OBDII code B1979 Passenger Seat Rearward Switch Circuit Short To Battery?

This code is typically caused by a short circuit in the wiring harness connected to the passenger seat rearward switch, or a faulty switch itself.

3. How can I diagnose the OBDII code B1979 Passenger Seat Rearward Switch Circuit Short To Battery?

Diagnosing this code involves inspecting the wiring harness for any visible damage or exposed wires, testing the switch for continuity, and using a multimeter to check for electrical shorts.

4. Is it safe to drive with the OBDII code B1979 Passenger Seat Rearward Switch Circuit Short To Battery?

It is generally safe to drive with this code, but it is recommended to address the issue promptly to avoid any inconvenience or discomfort from the inoperative seat adjustment.

5. Can I repair the OBDII code B1979 Passenger Seat Rearward Switch Circuit Short To Battery myself?

If you have experience with automotive electrical systems, you may be able to repair this issue yourself by replacing the faulty switch or repairing the damaged wiring. Otherwise, seeking professional help is advisable.

6. How much does it cost to fix the OBDII code B1979 Passenger Seat Rearward Switch Circuit Short To Battery?

The cost of repairing this code can vary depending on the extent of the damage and whether you choose to DIY or take it to a mechanic. Generally, the repair cost can range from $50 to $200.

7. Will resetting the OBDII code B1979 Passenger Seat Rearward Switch Circuit Short To Battery make it go away permanently?

Resetting the code may temporarily clear the warning light, but if the underlying issue is not fixed, the code is likely to reappear once the system detects the fault again.

8. Are there any preventive measures to avoid OBDII code B1979 Passenger Seat Rearward Switch Circuit Short To Battery?

To prevent this code from occurring, you can periodically check the condition of the wiring harness and switches in your vehicle, and address any signs of damage or wear promptly.

9. Can the OBDII code B1979 Passenger Seat Rearward Switch Circuit Short To Battery affect other systems in the vehicle?

While this code is specific to the passenger seat rearward switch circuit, electrical issues in one part of the vehicle can sometimes have ripple effects on other systems. It's best to address the problem promptly to prevent any further complications.

10. How long does it take to repair the OBDII code B1979 Passenger Seat Rearward Switch Circuit Short To Battery?

The repair time can vary depending on the extent of the issue and your familiarity with automotive repairs. On average, a professional mechanic can complete the repair in about 1-2 hours.

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