AutoCodes – Generic – B253B

B253B Code - Convertible Top Header Latch Limit Switch Circuit Low

Quick Answer

The Convertible Top is fairly typical of convertible tops. Common causes include Faulty Header Latch Limit Switch, Header Latch Limit Switch harness is open or shorted, Header Latch Limit Switch 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: B253B indicates Convertible Top Header Latch Limit Switch Circuit Low.
Common causes: Common causes include Faulty Header Latch Limit Switch, Header Latch Limit Switch harness is open or shorted, Header Latch Limit Switch 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 731

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 22, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B253B Description

The Convertible Top is fairly typical of convertible tops. There are three types of failures possible: Electrical failure (switches, wiring, motor, etc.), Hydraulic failure (fluid level low, leaks, pump internal, etc.), and Mechanical failure (binding roof, bent links, obstructions, etc.). Each type of failure mode will be rationalized by the power Top Control Module (PTCM) and labeled with a Diagnostic Trouble Code (DTC). The DTCs set by the PTCM can also be considered to have three types of failure modes:
1. Performance - These are time out DTCs, meaning the system timed out waiting for the next switch in sequence to change state. When the PTCM does not get the state change in the expected amount of time, it assumes something may be wrong and stops any further top operation in that direction. Typically the pump will run for 10 second before it times out.
2. Circuit Low - These DTCs set for a circuit that stays active at all times, meaning the signal circuit to the specified switch is continuously grounded. This could relate to a short to ground on the signal circuit, a sticking switch, or even a mechanical issue not allowing the switch to become inactive.
3. Correlation - These DTCs specifically relate two switches in a subcomponent (deck lid, tonneau drive, header latch, etc.) of the convertible top system. Both of the specified switches will be active in one position of the subcomponent (extended, retracted, open, closed, etc.). The switch that will not change state while attempting to operate the convertible top system, is the most likely area for attention.

OBDII Code B253B - Convertible Top Header Latch Limit Switch Circuit Low - AutoCodes.com — B253B Code - Convertible Top Header Latch Limit Switch Circuit Low

What does this mean?

What are the Possible Causes of the DTC B253B?

Faulty Header Latch Limit Switch
Header Latch Limit Switch harness is open or shorted
Header Latch Limit Switch circuit poor electrical connection
Faulty Power Top Control Module (PTCM)

How to Fix the DTC B253B?

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 B253B 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 B253B code?

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Need Help with the Code?

Get the B253B code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B253B Chrysler — Convertible Top Header Latch Limit Switch Circuit Low
B253B Dodge — Convertible Top Header Latch Limit Switch Circuit Low

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 B253B Code

1. What are the common symptoms of OBDII code B253B (Convertible Top Header Latch Limit Switch Circuit Low)?

- Common symptoms include the convertible top not operating correctly, the top not latching securely, and warning lights on the dashboard related to the convertible top system.

2. What can cause OBDII code B253B to trigger?

- This code is typically triggered by a malfunction in the header latch limit switch circuit, which can be caused by wiring issues, a faulty limit switch, or a problem with the convertible top control module.

3. How can I diagnose the issue causing OBDII code B253B?

- To diagnose the issue, you can use a diagnostic scan tool to read the code and check the wiring and connectors associated with the header latch limit switch. Testing the limit switch itself may also be necessary.

4. Are there any simple repair tips for fixing OBDII code B253B?

- Simple repair tips include checking and repairing any damaged wiring, ensuring all connectors are securely attached, and replacing the header latch limit switch if it is found to be faulty.

5. Can I continue driving my vehicle with OBDII code B253B present?

- It is not recommended to continue driving with this code present, as it can affect the proper operation of the convertible top and potentially lead to further damage if left unresolved.

6. Is it possible to reset OBDII code B253B without repairs?

- While clearing the code with a scan tool may temporarily remove the warning lights, the underlying issue causing the code will persist until properly diagnosed and repaired.

7. How much does it typically cost to repair OBDII code B253B?

- The cost of repair can vary depending on the specific cause of the issue, but it may involve expenses for parts such as the limit switch, labor for diagnosis and repair, and potentially programming or reinitialization of the convertible top system.

8. Can weather conditions affect the occurrence of OBDII code B253B?

- Extreme weather conditions, especially exposure to moisture and temperature fluctuations, can potentially contribute to electrical issues that trigger this code. Regular maintenance and protection of the convertible top components can help prevent such problems.

9. Are there any preventive measures to avoid OBDII code B253B in the future?

- Regularly inspecting and maintaining the convertible top components, keeping them clean and properly lubricated, and addressing any issues promptly can help prevent the occurrence of this code in the future.

10. Is it possible to repair OBDII code B253B at home, or should I seek professional help?

- While some basic troubleshooting and repairs can be done at home, diagnosing and fixing the specific cause of this code may require specialized tools and expertise, so seeking professional help from a qualified mechanic or technician is often recommended.