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B120E Jeep Code - Left Heated Seat HI Indicator Control Circuit High

Quick Answer

The B120E diagnostic trouble code (DTC) for Jeep vehicles refers to the "Left Heated Seat HI Indicator Control Circuit High." This code indicates that there is a high voltage condition detected in the control circuit for the left heated seat high indicator. Common causes include Faulty heated seat control module, Wiring issues or shorts in the heated seat circuit, Defective heated seat high indicator switch. 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
B120E Jeep indicates Left Heated Seat HI Indicator Control Circuit High.
Common causes
Common causes include Faulty heated seat control module, Wiring issues or shorts in the heated seat circuit, Defective heated seat high indicator switch.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code B120E Jeep Description

The B120E diagnostic trouble code (DTC) for Jeep vehicles refers to the "Left Heated Seat HI Indicator Control Circuit High." This code indicates that there is a high voltage condition detected in the control circuit for the left heated seat high indicator. In simpler terms, it means that there is an issue with the circuit that controls the high setting for the left heated seat indicator light. This could potentially result in the seat heater not functioning properly, which can be uncomfortable for the driver or passengers, especially in cold weather.

OBDII Code B120E Jeep - Left Heated Seat HI Indicator Control Circuit High
B120E Jeep Code - Left Heated Seat HI Indicator Control Circuit High

Common Causes of B120E Jeep

  1. Faulty heated seat control module.
  2. Wiring issues or shorts in the heated seat circuit.
  3. Defective heated seat high indicator switch.
  4. Corrosion or poor connections in the heated seat circuit.
  5. Electrical issues within the vehicle's system.

Symptoms of B120E Jeep

  1. The left heated seat high indicator light stays on constantly.
  2. The left heated seat high indicator light does not illuminate at all.
  3. The left heated seat does not heat up to the desired temperature.
  4. The left heated seat heats up inconsistently or intermittently.

How to Fix B120E Jeep

  1. Begin by conducting a visual inspection of the heated seat circuit, looking for any visible damage, corrosion, or loose connections.
  2. Use a multimeter to test the voltage in the circuit to determine if there is a high voltage condition present.
  3. Check the heated seat control module for any signs of damage or malfunction and replace if necessary.
  4. Inspect the heated seat high indicator switch for proper operation and replace if faulty.
  5. Test the repaired system to ensure that the left heated seat high indicator functions correctly and that the seat heats up as expected.

Cost to Fix B120E Jeep

The cost of repairing the B120E code for the left heated seat high indicator control circuit high can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay anywhere from $100 to $300 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to get a quote from a few different shops to compare prices. Additionally, the cost may be higher if the issue requires extensive troubleshooting or if any parts need to be replaced.

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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 B120E Jeep Code

1. What are the common symptoms of OBDII code B120E in a Jeep related to the Left Heated Seat HI Indicator Control Circuit High?

- Common symptoms include the left heated seat high indicator staying illuminated even when the seat is not in high heat mode.

2. What are the possible causes of OBDII code B120E in a Jeep for the Left Heated Seat HI Indicator Control Circuit High?

- Possible causes may include a faulty heated seat module, wiring issues, or a malfunctioning heated seat switch.

3. How can I diagnose the issue with OBDII code B120E on my Jeep's left heated seat circuit?

- You can start by checking the wiring harness for any visible damage or loose connections, testing the heated seat module, and verifying the functionality of the heated seat switch.

4. Is it safe to continue driving my Jeep with OBDII code B120E related to the Left Heated Seat HI Indicator Control Circuit High?

- While the vehicle should still be safe to drive, it is recommended to address the issue promptly to ensure proper functioning of the heated seat system.

5. Can I repair OBDII code B120E in my Jeep related to the Left Heated Seat HI Indicator Control Circuit High myself?

- Depending on your skill level and access to tools, you may be able to repair the issue yourself by following diagnostic procedures outlined in the vehicle's service manual.

6. How much does it typically cost to repair OBDII code B120E on a Jeep for the Left Heated Seat HI Indicator Control Circuit High?

- Repair costs can vary depending on the specific cause of the issue, but it may involve replacing a faulty heated seat module, repairing wiring, or addressing other related components.

7. Can resetting the OBDII code B120E on my Jeep fix the issue with the Left Heated Seat HI Indicator Control Circuit High?

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

8. Are there any preventive measures I can take to avoid OBDII code B120E related to the Left Heated Seat HI Indicator Control Circuit High in my Jeep?

- Regularly inspecting the heated seat system, avoiding overuse of high heat settings, and addressing any issues promptly can help prevent this code from appearing.

9. Will OBDII code B120E in a Jeep affect the overall performance of the vehicle?

- This particular code is specific to the left heated seat control circuit and should not impact the overall performance of the vehicle other than the functionality of the heated seat.

10. Is it necessary to visit a dealership for repairs related to OBDII code B120E on my Jeep's Left Heated Seat HI Indicator Control Circuit High?

- While a dealership may have specialized knowledge and tools, a qualified automotive technician should be able to diagnose and repair the issue outside of a dealership setting.

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