AutoCodes – Chrysler – B1978 Chrysler

B1978 Chrysler Code - Power Liftgate Close Direction Sector Switch Performance

Quick Answer

The sector switch is essentially a park switch for the latch. Common causes include Binding Power Liftgate, Faulty Sector Switch Sense, Sector Switch Sense harness is open or shorted. 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: B1978 Chrysler indicates Power Liftgate Close Direction Sector Switch Performance.
Common causes: Common causes include Binding Power Liftgate, Faulty Sector Switch Sense, Sector Switch Sense harness is open or shorted.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 2,208

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 Jul 31, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B1978 Chrysler Description

The sector switch is essentially a park switch for the latch. When the latch is running a cinch or release operation, the switch is closed. After the cinch or release is complete, the PLGM will reverse direction of the latch until the switch is open.

OBDII Code B1978 Chrysler - Power Liftgate Close Direction Sector Switch Performance - AutoCodes.com — B1978 Chrysler Code - Power Liftgate Close Direction Sector Switch Performance

What does this mean?

What are the Possible Causes of the DTC B1978 Chrysler?

Binding Power Liftgate
Faulty Sector Switch Sense
Sector Switch Sense harness is open or shorted
Sector Switch Sense circuit poor electrical connection
Faulty Power Liftgate Latch
Faulty Power Liftgate Module

How to Fix the DTC B1978 Chrysler?

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 B1978 Chrysler 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 B1978 Chrysler code?

Need more information on how to fix the B1978 Chrysler code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1978 Chrysler 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 B1978 Chrysler Code

1. What are the common symptoms of OBDII code B1978 Chrysler related to Power Liftgate Close Direction Sector Switch Performance?

The common symptoms include the power liftgate not closing properly or failing to respond to the switch commands.

2. What are the possible causes of OBDII code B1978 Chrysler?

Possible causes include a malfunctioning liftgate close direction sector switch, wiring issues, or a faulty control module.

3. How can I diagnose the Power Liftgate Close Direction Sector Switch Performance issue?

You can diagnose the issue by performing a thorough inspection of the liftgate switch, checking the wiring for any damage, and using an OBDII scanner to read the fault codes.

4. Can I repair OBDII code B1978 Chrysler myself?

If you have experience working with automotive electrical systems, you may be able to repair this issue yourself by replacing the faulty liftgate sector switch or addressing any wiring problems.

5. Is it safe to continue driving with OBDII code B1978 Chrysler present?

It is not recommended to continue driving with this code present, as it can affect the proper functioning of the power liftgate and compromise safety.

6. How much does it typically cost to repair OBDII code B1978 Chrysler?

The cost of repair can vary depending on the exact cause of the issue, but it may involve replacing the liftgate switch, repairing wiring, or reprogramming the control module.

7. Will resetting the OBDII code B1978 Chrysler make the issue go away?

Resetting the code may temporarily clear the fault, but if the underlying issue is not addressed, the code is likely to reappear.

8. Can extreme weather conditions cause OBDII code B1978 Chrysler to trigger?

Extreme weather conditions can potentially exacerbate existing issues with the liftgate close direction sector switch, leading to the triggering of this fault code.

9. How long does it usually take to repair OBDII code B1978 Chrysler?

The repair time can vary depending on the extent of the issue and the availability of parts, but it may take a few hours to a day to complete the repair.

10. Is there a recall or technical service bulletin related to OBDII code B1978 Chrysler?

It's recommended to check with Chrysler or a certified dealership to see if there are any recalls or technical service bulletins related to this specific OBDII code to determine if the repair may be covered under warranty.