AutoCodes – Generic – B2105

B2105 Code - Throttle Position Input Out of Range Low

Quick Answer

The Engine Control Module (ECM) monitors the Throttle Position Sensor. Common causes include Faulty Throttle Position Sensor, Throttle Position Sensor harness is open or shorted, Throttle 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: B2105 indicates Throttle Position Input Out of Range Low.
Common causes: Common causes include Faulty Throttle Position Sensor, Throttle Position Sensor harness is open or shorted, Throttle 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.

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Code Popularity 7,037

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 17, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2105 Description

The Engine Control Module (ECM) monitors the Throttle Position Sensor. The ECM sets the OBDII code when the Throttle Position Sensor is not to factory specifications.

OBDII Code B2105 - Throttle Position Input Out of Range Low - AutoCodes.com — B2105 Code - Throttle Position Input Out of Range Low

What does this mean?

What are the Possible Causes of the DTC B2105?

Faulty Throttle Position Sensor
Throttle Position Sensor harness is open or shorted
Throttle Position Sensor circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC B2105?

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 B2105 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 B2105 code?

Need more information on how to fix the B2105 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2105 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B2105 Buick — Power Seat Switch Shorted
B2105 Cadillac — Power Seat Switch Shorted
B2105 Chevrolet — Power Seat Switch Shorted
B2105 Chrysler — Ignition Unlock Run/Start Control Circuit High
B2105 Dodge — Ignition Unlock Run/Start Control Circuit High
B2105 GMC — Power Seat Switch Shorted
B2105 Jeep — Ignition Unlock Run/Start Control Circuit High
B2105 RAM — Ignition Unlock Run/Start 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 B2105 Code

1. What are the common symptoms of OBDII code B2105 (Throttle Position Input Out of Range Low)?

- Common symptoms include poor acceleration, rough idling, stalling, and the vehicle going into limp mode.

2. What can cause the OBDII code B2105 to trigger?

- The code may be triggered by a faulty throttle position sensor, wiring issues, or a problem with the throttle body.

3. How can I diagnose the cause of OBDII code B2105?

- You can diagnose the issue by checking the throttle position sensor for proper operation, inspecting the wiring for any damage, and performing a throttle body inspection.

4. Can a dirty throttle body cause code B2105 to appear?

- Yes, a dirty or contaminated throttle body can cause erratic readings from the throttle position sensor, triggering the B2105 code.

5. What are some repair tips for fixing OBDII code B2105?

- Repair tips include cleaning the throttle body, checking and replacing the throttle position sensor if necessary, and ensuring all wiring connections are secure.

6. Is it safe to drive with OBDII code B2105 active?

- It is not recommended to drive with the B2105 code active, as it can lead to further engine performance issues and potential safety hazards.

7. Can I reset the OBDII code B2105 without fixing the underlying issue?

- While you can clear the code with an OBDII scanner, it is important to address the underlying problem to prevent the code from reoccurring.

8. How much does it typically cost to repair OBDII code B2105?

- The cost of repair can vary depending on the cause of the issue, but it may range from $100 to $300 for parts and labor.

9. Will OBDII code B2105 cause a decrease in fuel efficiency?

- Yes, the B2105 code can cause a decrease in fuel efficiency due to the impact on engine performance and throttle control.

10. Can I fix OBDII code B2105 myself, or do I need to take it to a mechanic?

- Depending on your mechanical skills and tools available, you may be able to fix the issue yourself by following repair guides or seek assistance from a professional mechanic for a more accurate diagnosis and repair.