P1515 Buick Code - Control Module Throttle Actuator Position Performance
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 Poor connection at the Throttle Actuator Control (TAC) module, Faulty TAC module, Faulty Throttle Pedal Position (TPP) or Throttle Position (TPS) sensors. 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
- P1515 Buick indicates Control Module Throttle Actuator Position Performance.
- Common causes
- Common causes include Poor connection at the Throttle Actuator Control (TAC) module, Faulty TAC module, Faulty Throttle Pedal Position (TPP) or Throttle Position (TPS) sensors.
- 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 P1515 Buick 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).
<b>Throttle Body Assembly</b>
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 P1515 Buick?
- Poor connection at the Throttle Actuator Control (TAC) module
- Faulty TAC module
- Faulty Throttle Pedal Position (TPP) or Throttle Position (TPS) sensors
- Binding or bent throttle plate-failed throttle body
How to Fix the DTC P1515 Buick?
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 P1515 Buick 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 P1515 Buick Code
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