AutoCodes – Hummer – P1516 Hummer

P1516 Hummer Code - Throttle Actuator Control Module Throttle Actuator Position Performance

Quick Answer

The Engine Control Module (ECM) is the control center for the Throttle Actuator Control (TAC) system. Common causes include Faulty Throttle Actuator Control (TAC) module, Throttle Actuator Control (TAC) module harness is open or shorted, Throttle Actuator Control (TAC) module 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: P1516 Hummer indicates Throttle Actuator Control Module Throttle Actuator Position Performance.
Common causes: Common causes include Faulty Throttle Actuator Control (TAC) module, Throttle Actuator Control (TAC) module harness is open or shorted, Throttle Actuator Control (TAC) module 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.

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Code Popularity 22,978

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 21, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P1516 Hummer Description

The Engine Control Module (ECM) is the control center for the Throttle Actuator Control (TAC) system. The ECM determines the drivers intent and then calculates the appropriate throttle response. The ECM achieves throttle positioning by providing a pulse width modulated voltage to the TAC motor. The TAC system uses the following circuits for Motor control 1 and Motor control 2.
Two processors are also used to monitor the TAC system data. Both processors are located within the ECM. Both processors monitor each other's data to verify that the indicated throttle position is correct.

OBDII Code P1516 Hummer - Throttle Actuator Control Module Throttle Actuator Position Performance - AutoCodes.com — P1516 Hummer Code - Throttle Actuator Control Module Throttle Actuator Position Performance

What does this mean?

What are the Possible Causes of the DTC P1516 Hummer?

Faulty Throttle Actuator Control (TAC) module
Throttle Actuator Control (TAC) module harness is open or shorted
Throttle Actuator Control (TAC) module circuit poor electrical connection
Check Throttle Actuator Control (TAC) module connector for water
Binding or bent throttle plate-failed throttle body

How to Fix the DTC P1516 Hummer?

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 does this mean?

Code Tech Notes

There are factory service bulletins for the P1516 code on following HUMMER vehicles:

2006-2007 HUMMER H2
2006-2007 HUMMER H2 SUT
HUMMER H2 Factory Service Bulletin OBDII Code P1516

2006-2012 Hummer H3
HUMMER H3 Factory Service Bulletin OBDII Code P1516

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1516 Hummer 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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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.

Frequently Asked Questions about P1516 Hummer Code

1. What are the common symptoms of OBDII code P1516 in a Hummer related to the Throttle Actuator Control Module Throttle Actuator Position Performance?

- Common symptoms include reduced engine power, stalling, rough idling, and the vehicle going into "limp mode."

2. What are the possible causes of OBDII code P1516 in a Hummer indicating an issue with the Throttle Actuator Control Module Throttle Actuator Position Performance?

- Potential causes may include a faulty throttle body, damaged wiring or connectors, a malfunctioning throttle position sensor, or issues with the throttle actuator control module.

3. How can I diagnose the OBDII code P1516 in my Hummer related to the Throttle Actuator Control Module Throttle Actuator Position Performance?

- Diagnosis typically involves scanning the vehicle's computer for trouble codes, checking the throttle body and related components for any visible damage, and testing the throttle position sensor and wiring for proper functionality.

4. Is it safe to drive my Hummer with OBDII code P1516 indicating an issue with the Throttle Actuator Control Module Throttle Actuator Position Performance?

- It is not recommended to drive the vehicle with this code present, as it can lead to performance issues and potentially unsafe driving conditions. It's best to address the problem promptly.

5. What repairs might be needed to fix OBDII code P1516 in a Hummer related to the Throttle Actuator Control Module Throttle Actuator Position Performance?

- Repairs may involve replacing the throttle body, repairing or replacing damaged wiring or connectors, calibrating or replacing the throttle position sensor, or addressing any issues with the throttle actuator control module.

6. Can a DIY enthusiast fix OBDII code P1516 in a Hummer indicating an issue with the Throttle Actuator Control Module Throttle Actuator Position Performance?

- While some aspects of diagnosis and repair may be within reach of a skilled DIYer, addressing this code effectively often requires specialized tools and expertise. It's recommended to consult a professional mechanic.

7. How much does it typically cost to repair OBDII code P1516 in a Hummer related to the Throttle Actuator Control Module Throttle Actuator Position Performance?

- The cost of repairs can vary depending on the exact cause of the issue and the needed repairs. Costs may range from a few hundred dollars to over a thousand, including parts and labor.

8. Will resetting the OBDII system clear the P1516 code related to the Throttle Actuator Control Module Throttle Actuator Position Performance in a Hummer?

- Resetting the system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to return. It's important to diagnose and fix the root cause of the problem.

9. How urgent is it to address OBDII code P1516 in a Hummer indicating a problem with the Throttle Actuator Control Module Throttle Actuator Position Performance?

- It is recommended to address this issue promptly to prevent further damage to the vehicle and ensure safe and optimal driving conditions. Ignoring the problem could lead to more severe issues over time.

10. Can a faulty Throttle Actuator Control Module cause other OBDII codes besides P1516 in a Hummer?

- Yes, a malfunctioning Throttle Actuator Control Module can potentially trigger other related codes such as P2101 (Throttle Actuator Position Performance) or P2119 (Throttle Closed Position Performance).