Engine-CodesCadillac – P1517 Cadillac

P1517 Cadillac Code - Throttle Actuator Control Module Performance

Quick Answer

The P1517 diagnostic trouble code for Cadillac vehicles indicates a problem with the Throttle Actuator Control Module (TACM) performance. Common causes include Faulty Throttle Actuator Control Module, Wiring or connector issues in the TACM circuit, Electronic control unit (ECU) communication problems. 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
P1517 Cadillac indicates Throttle Actuator Control Module Performance.
Common causes
Common causes include Faulty Throttle Actuator Control Module, Wiring or connector issues in the TACM circuit, Electronic control unit (ECU) communication problems.
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.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1517 Cadillac Description

The P1517 diagnostic trouble code for Cadillac vehicles indicates a problem with the Throttle Actuator Control Module (TACM) performance. The TACM is responsible for controlling the throttle actuator, which manages the opening and closing of the throttle body in response to driver input. When this module malfunctions or fails to operate properly, it can significantly impact the vehicle's performance and drivability.

OBDII Code P1517 Cadillac - Throttle Actuator Control Module Performance
P1517 Cadillac Code - Throttle Actuator Control Module Performance

Common Causes of P1517 Cadillac

  1. Faulty Throttle Actuator Control Module
  2. Wiring or connector issues in the TACM circuit
  3. Electronic control unit (ECU) communication problems
  4. Throttle body malfunction or contamination
  5. Accelerator pedal position sensor failure

Symptoms of P1517 Cadillac

  1. Check Engine Light illuminated on the dashboard
  2. Reduced engine power or acceleration
  3. Rough idling or engine stalling
  4. Unresponsive throttle response
  5. Engine surging or hesitation during acceleration

How to Fix P1517 Cadillac

  1. Diagnose the TACM system using a diagnostic scanner to identify the exact cause of the performance issue.
  2. Inspect the wiring harness and connectors for any signs of damage or corrosion, repairing or replacing as needed.
  3. Test the throttle actuator and throttle body for proper operation, cleaning or replacing components if necessary.
  4. Reset the TACM system and perform a throttle body relearn procedure to ensure proper calibration and functionality.
  5. Clear the diagnostic trouble codes from the vehicle's computer and test drive to confirm that the issue has been resolved.

Cost to Fix P1517 Cadillac

The typical repair costs for addressing a P1517 code related to the Throttle Actuator Control Module performance can range from $200 to $600, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It is advisable to check local rates for a more precise estimate before proceeding with the repair.

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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.

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