AutoCodes – RAM – B1E9A RAM

B1E9A RAM Code - Front Right Heater Control Circuit

Quick Answer

The Comfort Seat Wheel Module (CSWM) monitors the Front Right Heater Control Circuit. Common causes include Faulty Front Right Seat Back Heater Element, Front Right Seat Back Heater Element harness is open or shorted, Front Right 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: B1E9A RAM indicates Front Right Heater Control Circuit.
Common causes: Common causes include Faulty Front Right Seat Back Heater Element, Front Right Seat Back Heater Element harness is open or shorted, Front Right 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 1,666

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 Sep 04, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B1E9A RAM Description

The Comfort Seat Wheel Module (CSWM) monitors the Front Right Heater Control Circuit. The CSWM sets the OBDII code when the CSWM detects on the Right 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 B1E9A RAM - Front Right Heater Control Circuit - AutoCodes.com — B1E9A RAM Code - Front Right Heater Control Circuit

What does this mean?

What are the Possible Causes of the DTC B1E9A RAM?

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

How to Fix the DTC B1E9A RAM?

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

B1E9A-1E FRONT RIGHT HEATER CONTROL CIRCUIT RESISTANCE OUT OF RANGE
B1E9A-11 FRONT RIGHT HEATER CONTROL CIRCUIT SHORT TO GROUND
B1E9A-12 FRONT RIGHT HEATER CONTROL CIRCUIT SHORT TO BATTERY
B1E9A-13 FRONT RIGHT HEATER CONTROL CIRCUIT OPEN

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1E9A RAM 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 B1E9A RAM Code

1. What does the OBDII code B1E9A mean for a RAM vehicle?

The code B1E9A indicates a fault in the front right heater control circuit, which typically affects the functionality of the passenger-side climate control system.

2. What are the common symptoms of the B1E9A code?

Symptoms may include lack of temperature control on the front passenger side, inconsistent heating or cooling, or the climate control system not responding to adjustments.

3. What causes the B1E9A code to appear?

Common causes include a faulty blend door actuator, damaged wiring or connectors in the control circuit, or a malfunctioning HVAC control module.

4. How can I diagnose the B1E9A code on my RAM vehicle?

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

5. Can a blown fuse cause the B1E9A code?

Yes, a blown fuse in the HVAC system can disrupt the control circuit and trigger the B1E9A code. Check the fuses and replace any that are blown.

6. How do I fix the B1E9A code on my RAM?

Repairs may involve replacing the front right blend door actuator, repairing damaged wiring or connectors, or replacing the HVAC control module if it is determined to be faulty.

7. Is it safe to drive with the B1E9A code active?

Yes, it is generally safe to drive, but the passenger-side climate control may not function properly, which could be inconvenient in extreme weather conditions.

8. How much does it cost to repair the B1E9A code?

Repair costs vary depending on the issue, but replacing a blend door actuator typically costs $150 to $400, including parts and labor.

9. Can I reset the B1E9A code without fixing the issue?

You can clear the code using an OBDII scanner, but it is likely to return if the underlying problem is not resolved.

10. Do I need professional help to fix the B1E9A code?

If you are comfortable with basic electrical diagnostics and repairs, you may attempt to fix it yourself. Otherwise, a professional mechanic is recommended for accurate diagnosis and repair.