P2106 Saturn Code - Throttle Control System Performance - Throttle Limitations Active
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
- P2106 Saturn indicates Throttle Control System Performance - Throttle Limitations Active.
- 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 P2106 Saturn 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 P2106 Saturn?
- 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 P2106 Saturn?
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 P2106 Saturn 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 P2106 Saturn Code
1. What does the OBDII code P2106 mean on a Saturn?
P2106 indicates that the powertrain control module (PCM) has detected a throttle control system performance issue and has activated a fail-safe or "limp mode" to limit throttle operation.
2. What are the common symptoms of the P2106 code in a Saturn vehicle?
Symptoms may include reduced engine power, hesitation during acceleration, a throttle that doesn’t respond properly, and the check engine light being illuminated.
3. What causes the P2106 code to appear on a Saturn?
Common causes include a malfunctioning throttle body, a faulty throttle position sensor, wiring issues, a defective accelerator pedal position sensor, or problems with the PCM.
4. Can I drive my Saturn with the P2106 code active?
While the vehicle may still be drivable, it will likely be in limp mode with limited power. Driving in this condition for extended periods is not recommended as it could cause further damage.
5. How is the P2106 code diagnosed in a Saturn?
A technician will use a scan tool to check for related codes, inspect the throttle body and sensors, examine wiring and connectors for damage, and perform tests on the throttle control system components.
6. How do you fix the P2106 code on a Saturn?
Repairs may include cleaning or replacing the throttle body, replacing a faulty throttle position sensor or accelerator pedal position sensor, repairing damaged wiring, or updating/replacing the PCM.
7. Can a dirty throttle body trigger the P2106 code on a Saturn?
Yes, a dirty or carbon-clogged throttle body can restrict airflow and cause the PCM to detect a performance issue, triggering the P2106 code.
8. Does the P2106 code always mean the throttle body needs replacement?
No, the issue could also stem from sensors, wiring, or even software glitches in the PCM. Proper diagnosis is essential to determine the exact cause.
9. What tools are needed to diagnose and repair the P2106 code on a Saturn?
You’ll typically need an OBDII scan tool, a multimeter for electrical testing, and basic hand tools for inspecting and replacing components.
10. How much does it usually cost to fix the P2106 code on a Saturn?
Repair costs can vary widely depending on the cause, ranging from $150–$500 for cleaning or replacing the throttle body or sensors, and potentially more if the PCM needs replacement or reprogramming.
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