P2105 Chevrolet Code - Throttle Actuator Control System - Forced Engine Shutdown
Quick Answer
The Throttle Actuator Control (TAC) system uses vehicle electronics and components to calculate and control the position of the throttle blade. Common causes include Faulty Throttle Actuator Control (TAC), Throttle Actuator Control (TAC) harness is open or shorted, Throttle Actuator Control (TAC) 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
- P2105 Chevrolet indicates Throttle Actuator Control System - Forced Engine Shutdown.
- Common causes
- Common causes include Faulty Throttle Actuator Control (TAC), Throttle Actuator Control (TAC) harness is open or shorted, Throttle Actuator Control (TAC) 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 P2105 Chevrolet Description
The TAC system components include, but are not limited to the following:
- The accelerator pedal position (APP) sensors
- The throttle body
- The Powertrain Control Module (PCM)
Each of these components interface together to ensure accurate calculations and control of the throttle position (TP).
Throttle Body Assembly
The throttle body for the throttle actuator control (TAC) system is similar to a conventional throttle body with several exceptions. One exception being the use of a motor to control the throttle position instead of a mechanical cable. Another exception is the throttle position (TP) sensor. The TP sensor is mounted in the throttle body assembly. The TP sensor is 2 individual TP sensors within the throttle body assembly. Two separate signal, low reference, and 5-volt reference circuits are used to connect the TP sensors and the Powertrain Control Module (PCM). TP sensor 2 signal voltage increases as the throttle opens. TP sensor 1 signal voltage decreases as the throttle opens.
What are the Possible Causes of the DTC P2105 Chevrolet?
- Faulty Throttle Actuator Control (TAC)
- Throttle Actuator Control (TAC) harness is open or shorted
- Throttle Actuator Control (TAC) circuit poor electrical connection
How to Fix the DTC P2105 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 P2105 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 P2105 Chevrolet Code
No Frequently Asked Questions about P2105 Chevrolet Code found.
Discuss the causes and fixes for P2105 Chevrolet OBDII Code
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So I have the code p2105 on my 2005 chevtrailblazer, v8. I just put a new accelerator pedal position sensor on and now the truck wont start. Please help.
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Could you please double check the code number, we have been looking everywhere for that code on the 2005 Chevy Trailblazer and we can not find any information. That code is not listed on the factory service manual for that model year.
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Hi, I just plugged the code reader into my trailblazer again and thats the code thats coming up. P2105 in my code book is "throttle actuator control system - Forced engine shutdown". My truck wont start.
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Unfortunately I can't help with that code, there is no information on the 2005 Chevrolet Trailblazer V8 factory service manual for the P2105 code.
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I have the code P2105 showing up on my 2008 Chevrolet Aveo. I had the throttle body replaced and a new battery put in, it worked for the drive home from the shop. I went to crank the car the next morning and the car died and the code popped up again. Any ideas on what could be causing it?
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The throttle body usually take care of the code, it is possible that the throttle body connector came loose after the drive home. Check the throttle body connector and if the connector is OK, then try disconnecting the car battery for about 30 minutes to reset the system.
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I have disconnected the battery it will reset the check engine light and the car will crank and run for about a min at an idle around 1k rpms then it will drop to around 400-500 rpms then cut off and the check engine light comes back on with the same code. I have not checked the wire going to the throttle body yet though.
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