AutoCodesGeneric – B120E

B120E Code - Left Heated Seat HI Indicator Control Circuit High

Quick Answer

The Instrument Cluster monitors the Left Heated Seat Switch. Common causes include Faulty Left Heated Seat Switch, Left Heated Seat Switch harness is open or shorted, Left 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
B120E indicates Left Heated Seat HI Indicator Control Circuit High.
Common causes
Common causes include Faulty Left Heated Seat Switch, Left Heated Seat Switch harness is open or shorted, Left 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 1,105
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Nov 19, 2024
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Code B120E Description

The Instrument Cluster monitors the Left Heated Seat Switch. This code is set immediately when the Cluster detects excessive voltage on the heated seat indicator control circuit.
OBDII Code B120E - Left Heated Seat HI Indicator Control Circuit High - AutoCodes.com
B120E Code - Left Heated Seat HI Indicator Control Circuit High

What are the Possible Causes of the DTC B120E?

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

How to Fix the DTC B120E?

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 B120E 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 B120E code?

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Need Help with the Code?

Get the B120E code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

  • B120E Chrysler — Left Heated Seat HI Indicator Control Circuit High
  • B120E Dodge — Left Heated Seat HI Indicator Control Circuit High
  • B120E Jeep — Left Heated Seat HI Indicator Control Circuit High
  • B120E RAM — Left Heated Seat HI Indicator Control Circuit High
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 Code

1. What does the OBDII code B120E mean?

B120E indicates an issue with the Left Heated Seat HI Indicator Control Circuit, specifically that it is experiencing a high voltage condition.

2. What are the common symptoms of code B120E?

Symptoms may include the left heated seat HI indicator not working, the heated seat malfunctioning, or the seat heating at the wrong temperature.

3. What causes the B120E code to trigger?

Common causes include a short to power in the indicator circuit, a faulty heated seat switch, a damaged HI indicator light, or wiring and connection issues.

4. Can a blown fuse cause the B120E code?

Not typically. This code is more likely caused by high voltage due to a short circuit or a problem with the indicator control or related wiring.

5. How do you diagnose the B120E code?

Diagnosis involves checking the heated seat indicator circuit for shorts, inspecting the wiring and connectors for damage, and testing the heated seat control module and switch.

6. Is it safe to drive with the B120E code?

Yes, it’s generally safe to drive, but the left heated seat or its indicator light may not function properly, which could be inconvenient in cold weather.

7. What repairs can fix the B120E code?

Repairs may include fixing or replacing damaged wiring, replacing a faulty heated seat switch, repairing the HI indicator light, or addressing issues in the control module.

8. How much does it cost to fix the B120E code?

Repair costs vary but typically range from $50 to $200 depending on whether minor wiring repairs or component replacements are needed.

9. Can I reset the B120E code without fixing the problem?

You can clear the code temporarily, but it will likely return unless the underlying issue is resolved.

10. What tools are needed to troubleshoot the B120E code?

A multimeter, wiring diagrams, and an OBDII scanner are essential for proper diagnosis and troubleshooting of this code.

Discuss the causes and fixes for B120E OBDII Code

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