The Buick fault code P1516 indicates a problem with the Throttle Actuator Control Module.
Symptoms include the Engine Light ON, lack of throttle response.
Causes may include a binding or bent Throttle Plate, faulty Throttle Body Assembly, or issues with the wiring harness.
This issue is serious as it affects throttle control.
To fix, inspect the wiring harness and connectors for damage and ensure proper connections.
| Repair Importance Level | 10.0 (Out of 10) |
| Estimated Repair Time | Approximately 1.0 hour |
| Repair Difficulty Level | 6.67 (Out of 10) |
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Symptoms for Buick p1516
The vehicle may experience rough idling or stalling due to Buick fault code P1516.
- With code P1516 on a Buick, symptoms may include: Engine Light ON
- , No throttle response
Causes for Buick p1516
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P1516 in a Buick typically indicates a malfunction in the throttle actuator control module.
- P1516 can be caused by a binding or bent Throttle Plate.
- A faulty Throttle Body Assembly.
- A Throttle Body Assembly harness that is open or shorted.
- A Throttle Body Assembly circuit with a poor electrical connection.
- Or a faulty Engine Control Module (ECM).
Fix for Buick p1516
Address the intake manifold runner control stuck closed condition causing Buick fault code P1516.
- To fix P1516, Review the ‘Possible Causes’ mentioned above and visually examine the corresponding wiring harness and connectors.
- Check the throttle body for any carbon buildup or sticking components.
- Clean the throttle body thoroughly using an appropriate cleaner.
- Inspect the throttle position sensor (TPS) for proper operation and wiring integrity.
- Replace the throttle body if necessary.
- Perform a throttle body relearn procedure using a scan tool to reset adaptations.
- Clear the fault code and test drive the vehicle to verify the repair.
Description for Buick p1516
Buick fault code P1516 relates to the throttle actuator control module performance.
Code P1516 for a Buick indicates that the Throttle Actuator Control (TAC) Module has detected an incorrect voltage signal from the Throttle Actuator Control Position Performance.
This code is triggered by the TAC Module when it detects discrepancies in the expected voltage signal from the throttle actuator control system.
The TAC Module monitors the throttle position sensor signals to ensure proper throttle operation and performance.
Tech Notes for Buick p1516
For Buick fault code P1516, check for issues with the throttle actuator control module.
When dealing with Buick fault code P1516, it typically indicates an issue with the Throttle Actuator Control Module (TACM).
To diagnose this fault code, you can start by checking the power and ground connections to the TACM using a multimeter.
Ensure that there is proper voltage and continuity.
Next, use a scan tool to communicate with the TACM and verify if it responds over the Controller Area Network (CAN) network.
If there is no response, it could indicate a problem with the TACM itself or the wiringconnectors leading to it.
Additionally, it’s crucial to inspect the wiring harness and connectors related to the TACM for any signs of damage, corrosion, or poor connections.
Look for broken, bent, or pushed out pins that could be causing the fault code.
In some cases, reprogramming or reflashing the TACM may be necessary to resolve the P1516 fault code.
This process can often be done using a scan tool with the appropriate software.
By following these diagnostic steps and performing thorough checks, you can pinpoint the root cause of the P1516 fault code in your Buick and proceed with the necessary repairs.
FAQ
Common causes of fault code P1516 in a Buick include binding/bent throttle plate, faulty throttle body assembly, open/shorted harness, poor electrical connection, or faulty ECM.
Diagnose P1516 in Buick: Check throttle plate, throttle body, harness for issues. Inspect wiring for damage, connector pins for corrosion. Fix as needed.
It is not safe to drive with a P1516 code on a Buick. The fault can cause throttle issues, leading to unsafe driving conditions.
