AutoCodes – Chevrolet – P16A1 2018 Chevrolet Silverado

P16A1 2018 Chevrolet Silverado Code - Throttle Position Sensor Communication Circuit High Voltage

Quick Answer

The Throttle Body Assembly contains a contact-less inductive throttle position sensing element that is managed by a customized integrated circuit. Common causes include Faulty Throttle Body Assembly, Throttle Body Assembly harness is open or shorted, Throttle Body Assembly 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: P16A1 2018 Chevrolet Silverado indicates Throttle Position Sensor Communication Circuit High Voltage.
Common causes: Common causes include Faulty Throttle Body Assembly, Throttle Body Assembly harness is open or shorted, Throttle Body Assembly 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 2,751

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 20, 2022

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P16A1 2018 Chevrolet Silverado Description

The Throttle Body Assembly contains a contact-less inductive throttle position sensing element that is managed by a customized integrated circuit. The throttle position sensor is mounted within the throttle body assembly and is not serviceable. The Engine Control Module (ECM) supplies the throttle body with a 5 V reference circuit, a low reference circuit. The asynchronous signal means communication is only going from the throttle body to the ECM. The throttle body cannot receive data from the ECM over the signal/serial data circuit. The throttle position sensor provides a signal voltage that changes relative to throttle blade angle. The throttle position sensor information is transmitted between the throttle body and the ECM on the signal/serial data circuit. The ECM decodes the serial data signal and is used as voltages for throttle position sensor 1 and 2. The Diagnostic Trouble Code (DTC) will be set when the ECM detects a high voltage circuit condition on the throttle position sensor signal circuit for greater than 1 s.

OBDII Code P16A1 2018 Chevrolet Silverado - Throttle Position Sensor Communication Circuit High Voltage - AutoCodes.com — P16A1 2018 Chevrolet Silverado Code - Throttle Position Sensor Communication Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P16A1 2018 Chevrolet Silverado?

Faulty Throttle Body Assembly
Throttle Body Assembly harness is open or shorted
Throttle Body Assembly circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P16A1 2018 Chevrolet Silverado?

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

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P16A1 2018 Chevrolet Silverado 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.

Need more information about the P16A1 2018 Chevrolet Silverado code?

Need more information on how to fix the P16A1 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P16A1 2018 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

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 P16A1 2018 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P16A1 in a 2018 Chevrolet Silverado related to the Throttle Position Sensor Communication Circuit High Voltage?

The common symptoms include engine hesitation, rough idling, poor acceleration, and potential stalling.

2. What are the possible causes of the OBDII code P16A1 in a 2018 Chevrolet Silverado?

Possible causes include a faulty throttle position sensor, issues with the wiring or connectors in the communication circuit, or a problem with the engine control module.

3. How can I diagnose the Throttle Position Sensor Communication Circuit High Voltage issue in my 2018 Chevrolet Silverado?

You can diagnose the issue by using an OBDII scanner to retrieve the trouble code, inspecting the throttle position sensor and its wiring for any visible damage, and testing the sensor's voltage output.

4. Can I continue to drive my 2018 Chevrolet Silverado with the P16A1 trouble code?

It is not recommended to continue driving with this code as it can lead to further engine problems and potential safety hazards. It's best to address the issue promptly.

5. What are some repair tips for fixing the Throttle Position Sensor Communication Circuit High Voltage problem in a 2018 Chevrolet Silverado?

Repair tips include checking and cleaning the throttle position sensor, inspecting and repairing any damaged wiring or connectors, and resetting the trouble code after making necessary repairs.

6. How much does it typically cost to repair the P16A1 code related to the Throttle Position Sensor in a 2018 Chevrolet Silverado?

The cost of repair can vary depending on the extent of the issue and whether you choose to do the repair yourself or take it to a professional mechanic. Costs may range from a few hundred to over a thousand dollars.

7. Will resetting the trouble code fix the Throttle Position Sensor Communication Circuit High Voltage issue in my 2018 Chevrolet Silverado?

Resetting the trouble code may temporarily clear the warning light, but if the underlying issue causing the code is not addressed, the problem is likely to return. It's important to diagnose and repair the root cause of the code.

8. Is it safe to attempt to repair the Throttle Position Sensor issue in a 2018 Chevrolet Silverado yourself?

If you have the necessary tools, knowledge, and experience working on automotive electronics, you can attempt to repair the issue yourself. However, if you are unsure or unfamiliar with the process, it's best to seek professional help to avoid causing further damage.

9. Can a failed throttle position sensor cause other problems in my 2018 Chevrolet Silverado besides triggering the P16A1 trouble code?

Yes, a failed throttle position sensor can cause a variety of issues such as poor fuel economy, difficulty starting the engine, and problems with the transmission shifting smoothly. It's important to address the sensor issue promptly.

10. How long does it typically take to repair the Throttle Position Sensor Communication Circuit High Voltage problem in a 2018 Chevrolet Silverado?

The repair time can vary depending on the exact cause of the issue and the complexity of the repair. In general, it may take a few hours to a full day to diagnose and fix the problem, especially if wiring repairs or sensor replacement are necessary.