Engine-CodesGeneric – B120E

B120E Code - Left Heated Seat HI Indicator Control Circuit High

Quick Answer

The B120E diagnostic trouble code (DTC) refers to the Left Heated Seat HI Indicator Control Circuit High. Common causes include Faulty heated seat control module, Wiring issues or shorts in the heated seat circuit, Blown fuse related to the heated seat system. 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 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, Blown fuse related to the heated seat system.
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.
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code B120E Description

The B120E diagnostic trouble code (DTC) 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 vehicles equipped with heated seats, this code may be triggered when the control module detects an abnormal voltage level in the circuit responsible for controlling the high setting of the left heated seat indicator.

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

Common Causes of B120E

  1. Faulty heated seat control module
  2. Wiring issues or shorts in the heated seat circuit
  3. Blown fuse related to the heated seat system
  4. Malfunctioning left heated seat high indicator switch
  5. Corrosion or damage to the electrical connectors in the heated seat system

Symptoms of B120E

  1. Left heated seat high indicator light not working
  2. Left heated seat not heating up properly
  3. Inconsistent heating levels in the left heated seat
  4. Illumination of the check engine light

How to Fix B120E

  1. Begin by conducting a visual inspection of the heated seat system, checking for any visible damage to the wiring, connectors, or components.
  2. Use a multimeter to test the voltage levels in the control circuit for the left heated seat high indicator. Compare the readings to the manufacturer's specifications to identify any abnormal voltage levels.
  3. Inspect the heated seat control module and the high indicator switch for any signs of damage or malfunction. Replace any faulty components as needed.
  4. Check and replace any blown fuses related to the heated seat system.
  5. Clear the DTC from the vehicle's memory using a diagnostic scan tool after completing the repairs and test the left heated seat system to ensure proper functionality.

Cost to Fix B120E

The typical repair costs for addressing the B120E code can vary depending on the specific cause of the issue and the vehicle's make and model. On average, the parts and labor for repairing the left heated seat HI indicator control circuit high can range from $150 to $500. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's recommended to obtain quotes from local shops for a more accurate estimate.

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Code B120E 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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