AutoCodes – Chrysler – B121B Chrysler

B121B Chrysler Code - Right Heated Seat HI Indicator Control Circuit Open

Quick Answer

The Instrument Cluster monitors the Right Heated Seat Switch. Common causes include Faulty Right Heated Seat Switch, Right Heated Seat Switch harness is open or shorted, Right Heated Seat Switch circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B121B Chrysler indicates Right Heated Seat HI Indicator Control Circuit Open.
Common causes: Common causes include Faulty Right Heated Seat Switch, Right Heated Seat Switch harness is open or shorted, Right Heated Seat Switch circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 1,030

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 19, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B121B Chrysler Description

The Instrument Cluster monitors the Right Heated Seat Switch. This code is set immediately when the Cluster detects low voltage on the heated seat indicator control circuit.

OBDII Code B121B Chrysler - Right Heated Seat HI Indicator Control Circuit Open - AutoCodes.com — B121B Chrysler Code - Right Heated Seat HI Indicator Control Circuit Open

What does this mean?

What are the Possible Causes of the DTC B121B Chrysler?

Faulty Right Heated Seat Switch
Right Heated Seat Switch harness is open or shorted
Right Heated Seat Switch circuit poor electrical connection
Faulty Instrument Cluster

How to Fix the DTC B121B 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 B121B 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.

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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 B121B Chrysler Code

1. What are the common symptoms of OBDII code B121B Chrysler (Right Heated Seat HI Indicator Control Circuit Open)?

- The common symptoms include the right heated seat indicator not working or staying on, and the right heated seat not functioning properly.

2. What are the potential causes of the OBDII code B121B Chrysler?

- The code can be caused by a faulty heated seat module, damaged wiring in the heated seat system, or a defective heated seat control switch.

3. How can I diagnose the OBDII code B121B Chrysler for the Right Heated Seat HI Indicator Control Circuit Open?

- You can use a diagnostic scanner to retrieve the specific error code, check the wiring and connectors in the right heated seat system, and test the components for proper functionality.

4. What are some repair tips for fixing the Right Heated Seat HI Indicator Control Circuit Open issue?

- Start by inspecting the wiring and connectors for any visible damage or corrosion. Ensure all connections are secure and repair any damaged wiring. You may need to replace the heated seat module or control switch if they are found to be faulty.

5. Can I continue driving with the OBDII code B121B Chrysler present?

- It is not recommended to ignore the code, as it indicates a problem with the right heated seat system. Continued driving without addressing the issue can lead to further damage and potential safety hazards.

6. How much does it typically cost to repair the Right Heated Seat HI Indicator Control Circuit Open issue?

- The cost of repair can vary depending on the exact cause of the problem. Simple fixes like repairing wiring may be inexpensive, while replacing components like the heated seat module can be more costly.

7. Is the Right Heated Seat HI Indicator Control Circuit Open a common issue in Chrysler vehicles?

- While not extremely common, issues with heated seat systems can occur in Chrysler vehicles, leading to the OBDII code B121B being triggered.

8. Can I reset the OBDII code B121B Chrysler without fixing the underlying issue?

- Resetting the code without addressing the root cause will only temporarily clear the warning light. The code will likely reappear once the system detects the ongoing problem.

9. Are there any safety precautions I should take when working on the Right Heated Seat HI Indicator Control Circuit Open problem?

- It is important to disconnect the car battery before working on any electrical components to prevent electrical shocks or damage to the vehicle's electrical system.

10. How can I prevent the OBDII code B121B Chrysler from coming back after repair?

- To prevent the code from reappearing, ensure all repairs are done correctly, use quality replacement parts, and regularly check the heated seat system for any signs of wear or damage.