AutoCodes – Chrysler – B1E99 Chrysler

B1E99 Chrysler Code - Front Left Heater Control Circuit

Quick Answer

The Comfort Seat Wheel Module (CSWM) monitors the Front Left Heater Control Circuit. Common causes include Faulty Front Left Seat Back Heater Element, Front Left Seat Back Heater Element harness is open or shorted, Front Left Seat Back Heater Element 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: B1E99 Chrysler indicates Front Left Heater Control Circuit.
Common causes: Common causes include Faulty Front Left Seat Back Heater Element, Front Left Seat Back Heater Element harness is open or shorted, Front Left Seat Back Heater Element 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 2,330

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Sep 04, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B1E99 Chrysler Description

The Comfort Seat Wheel Module (CSWM) monitors the Front Left Heater Control Circuit. The CSWM sets the OBDII code when the CSWM detects on the Left Front Seat Heater Control circuit an impedance equal to or above 7.0 Ohms for more than two seconds, a voltage below 1.0 volt or a current above 10.0 amps for more than two seconds with the output turned on, a voltage above 5.0 volts for more than two seconds with the output turned off or a current below 0.5 of an amp for more than two seconds with the output turned on.

OBDII Code B1E99 Chrysler - Front Left Heater Control Circuit - AutoCodes.com — B1E99 Chrysler Code - Front Left Heater Control Circuit

What does this mean?

What are the Possible Causes of the DTC B1E99 Chrysler?

Faulty Front Left Seat Back Heater Element
Front Left Seat Back Heater Element harness is open or shorted
Front Left Seat Back Heater Element circuit poor electrical connection
Faulty Comfort Seat Wheel Module (CSWM)

How to Fix the DTC B1E99 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 does this mean?

Code Tech Notes

B1E99-1E FRONT LEFT HEATER CONTROL CIRCUIT RESISTANCE OUT OF RANGE
B1E99-11 FRONT LEFT HEATER CONTROL CIRCUIT SHORT TO GROUND
B1E99-12 FRONT LEFT HEATER CONTROL CIRCUIT SHORT TO BATTERY
B1E99-13 FRONT LEFT HEATER CONTROL CIRCUIT OPEN

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1E99 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 B1E99 Chrysler Code

1. What does the OBDII code B1E99 on a Chrysler vehicle mean?

The B1E99 code indicates an issue with the front left heater control circuit, which manages the heating or cooling functionality for the front left side of the vehicle.

2. What are the common symptoms of the B1E99 code?

Common symptoms include no or inconsistent heating/cooling on the front left side, unusual noises from the HVAC system, or a climate control system error message.

3. What causes the B1E99 code to appear?

The code can be triggered by a faulty blend door actuator, damaged wiring or connectors in the heater control circuit, or a malfunctioning HVAC control module.

4. How can I diagnose the B1E99 code?

Start by scanning the vehicle with an OBDII scanner, inspecting the wiring and connectors for damage, and testing the blend door actuator for proper operation.

5. Can I drive my Chrysler with a B1E99 code?

Yes, you can drive the vehicle, but the heating or cooling on the front left side may not function correctly, impacting passenger comfort.

6. How do I fix the B1E99 code on my Chrysler?

Repairs may involve replacing the blend door actuator, repairing damaged wiring or connectors, or reprogramming or replacing the HVAC control module.

7. What tools are needed to fix the B1E99 code?

You may need an OBDII scanner, a multimeter for testing electrical components, and basic tools for accessing and replacing HVAC components.

8. How much does it cost to fix the B1E99 code?

Repair costs can range from $100 to $400, depending on whether you need to replace the actuator or perform more extensive electrical work.

9. Can a B1E99 code clear itself?

In rare cases, the code may clear if the issue is intermittent, but most likely, the underlying problem will need to be addressed before the code is resolved.

10. Is the B1E99 code specific to Chrysler vehicles?

While the code format is standard, the B1E99 code and its description are specific to Chrysler vehicles and their HVAC systems.