B2120 Chevrolet Code - Power Seat Position Sensor Voltage
Quick Answer
The Power Seat Position Sensor that sets this Diagnostic Trouble Code (DTC) is either attached to the seat directional motor drive cable or directly to the motor it monitors. Common causes include Faulty Power Seat Position Sensor, Power Seat Position Sensor harness is open or shorted, Power Seat Position Sensor 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
- B2120 Chevrolet indicates Power Seat Position Sensor Voltage.
- Common causes
- Common causes include Faulty Power Seat Position Sensor, Power Seat Position Sensor harness is open or shorted, Power Seat Position Sensor 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.
Code B2120 Chevrolet Description
What are the Possible Causes of the DTC B2120 Chevrolet?
- Faulty Power Seat Position Sensor
- Power Seat Position Sensor harness is open or shorted
- Power Seat Position Sensor circuit poor electrical connection
- Faulty Memory Seat Module (MSM)
How to Fix the DTC B2120 Chevrolet?
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 B2120 Chevrolet 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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Frequently Asked Questions about B2120 Chevrolet Code
1. What does the OBDII code B2120 mean on a Chevrolet?
The B2120 code indicates a malfunction with the power seat position sensor voltage, typically due to an issue with the sensor or its circuitry.
2. What are the common symptoms of the B2120 code?
Symptoms may include the power seat not adjusting properly, the seat memory function failing, or an illuminated airbag or seat-related warning light.
3. What causes the B2120 code to appear?
Common causes include a faulty power seat position sensor, damaged wiring or connectors, or a malfunction in the seat control module.
4. Can the B2120 code affect airbag deployment?
Yes, since the seat position sensor is involved in determining airbag deployment force, this code can impact the airbag system's functionality.
5. How do I diagnose the B2120 code on a Chevrolet?
Diagnosis involves scanning for codes, inspecting the power seat position sensor and its wiring, and testing the sensor's voltage and resistance.
6. Can I drive my car with the B2120 code?
While the vehicle may still be drivable, the seat adjustment and airbag system may not work as intended, which could compromise safety.
7. How do I fix the B2120 code?
Repairs typically include replacing the faulty power seat position sensor, repairing damaged wiring or connectors, or reprogramming the seat control module if necessary.
8. How much does it cost to fix the B2120 code?
Repair costs can vary but generally range from $150 to $400, depending on whether the sensor, wiring, or module needs replacement.
9. Can I reset the B2120 code without repairing it?
Clearing the code without addressing the underlying issue will likely result in the code reappearing, as the problem remains unresolved.
10. What tools are needed to troubleshoot the B2120 code?
You’ll need an OBDII scanner, a multimeter for voltage testing, and possibly a wiring diagram for the seat position sensor circuit.
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