B120F Code - Left Heated Seat HI Indicator Control Circuit Open
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
- B120F indicates Left Heated Seat HI Indicator Control Circuit Open.
- 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.
Code B120F Description
What are the Possible Causes of the DTC B120F?
- 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 B120F?
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 B120F 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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Information for Specific Makes
- B120F Chrysler — Left Heated Seat HI Indicator Control Circuit Open
- B120F Dodge — Left Heated Seat HI Indicator Control Circuit Open
- B120F Jeep — Left Heated Seat HI Indicator Control Circuit Open
- B120F RAM — Left Heated Seat HI Indicator Control Circuit Open
Frequently Asked Questions about B120F Code
1. What does OBDII code B120F mean?
The B120F code indicates an issue with the left heated seat HI indicator control circuit, specifically an open or disconnected circuit.
2. What are the common symptoms of code B120F?
Symptoms include the left heated seat not functioning on the high setting, the HI indicator light not illuminating, or intermittent operation.
3. What causes the B120F code to trigger?
Common causes include a damaged or disconnected wiring harness, a faulty HI indicator light, a malfunctioning seat heater module, or a poor ground connection.
4. How is code B120F diagnosed?
A technician will inspect the wiring and connectors, test the HI indicator control circuit for continuity, and verify the operation of the seat heater module.
5. Can I still use the heated seat if B120F is present?
You may be able to use the seat heater on lower settings, but the high setting and indicator light may not function.
6. How do I fix code B120F?
Repairs may include reconnecting or replacing damaged wiring, replacing a defective HI indicator light, or repairing/replacing the seat heater module.
7. Is code B120F serious?
While it doesn't affect vehicle safety or performance, it impacts comfort features and should be addressed for proper operation of the heated seat.
8. Can I reset the code B120F after repair?
Yes, after resolving the issue, the code can be cleared with an OBDII scanner, but ensure the root cause is fixed to avoid recurrence.
9. What tools are needed to diagnose B120F?
You’ll need a multimeter to check wiring continuity and an OBDII scanner to read and clear codes.
10. Can a blown fuse cause code B120F?
Yes, a blown fuse in the heated seat circuit can interrupt power and trigger this code, so checking fuses is a good starting point.
Discuss the causes and fixes for B120F OBDII Code
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