AutoCodes – Chevrolet – P16A2 Chevrolet

P16A2 Chevrolet Code - Throttle Position Sensor Communication Circuit Performance

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 harness is open or shorted, Throttle Body 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: P16A2 Chevrolet indicates Throttle Position Sensor Communication Circuit Performance.
Common causes: Common causes include Faulty Throttle Body Assembly, Throttle Body harness is open or shorted, Throttle Body 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 12,707

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
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Code P16A2 Chevrolet 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 an incorrect message was received over the throttle position sensor signal circuit for greater than 1 s.

OBDII Code P16A2 Chevrolet - Throttle Position Sensor Communication Circuit Performance - AutoCodes.com — P16A2 Chevrolet Code - Throttle Position Sensor Communication Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P16A2 Chevrolet?

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

How to Fix the DTC P16A2 Chevrolet?

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 P16A2 Chevrolet 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 P16A2 Chevrolet code?

Need more information on how to fix the P16A2 Chevrolet code? Get Access to Factory Service Manuals

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Information for Specific Chevrolet Models

P16A2 2014 Chevrolet Silverado — Throttle Position Sensor Communication Circuit Performance
P16A2 2015 Chevrolet Silverado — Throttle Position Sensor Communication Circuit Performance
P16A2 2016 Chevrolet Silverado — Throttle Position Sensor Communication Circuit Performance
P16A2 2017 Chevrolet Silverado — Throttle Position Sensor Communication Circuit Performance
P16A2 2018 Chevrolet Silverado — Throttle Position Sensor Communication Circuit Performance

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 P16A2 Chevrolet Code

1. What does the OBDII code P16A2 mean on a Chevrolet?

The P16A2 code indicates an issue with the Throttle Position Sensor (TPS) communication circuit, specifically related to its performance.

2. What are the common symptoms of code P16A2?

Symptoms include poor engine performance, reduced throttle response, stalling, or the vehicle entering limp mode.

3. What causes code P16A2 on a Chevrolet?

Common causes include a faulty throttle position sensor, damaged wiring or connectors in the TPS circuit, or a failing engine control module (ECM).

4. Can I drive my Chevrolet with a P16A2 code?

While it may be possible to drive, itâ€™s not recommended as the vehicle may experience reduced performance or enter limp mode, creating safety risks.

5. How do I diagnose the P16A2 code?

Start by visually inspecting the TPS wiring and connectors for damage or corrosion, then test the sensor with a multimeter to check for proper voltage signals.

6. How do I fix a P16A2 code on my Chevrolet?

Repairs may include replacing the TPS, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming/updating the ECM.

7. How much does it cost to fix code P16A2?

Repair costs can vary, but replacing a TPS typically ranges from $100 to $300, depending on labor costs and parts pricing.

8. Can a dirty throttle body cause code P16A2?

A dirty throttle body can sometimes contribute to TPS-related issues, so cleaning it may help resolve the code in certain cases.

9. How can I prevent the P16A2 code from recurring?

Regular maintenance, such as inspecting wiring and keeping the throttle body clean, can help prevent communication issues with the TPS.

10. Will clearing the P16A2 code with a scanner fix the problem?

Clearing the code will reset the check engine light temporarily, but the underlying issue must be repaired to prevent the code from returning.

Discuss the causes and fixes for P16A2 Chevrolet OBDII Code

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Bruce B
Date: October 27, 2022 at 12:18 am

2016 Corvette Z06, Hard acceleration causes the engine to go into 'safe mode'. Power reduced, and severe shaking of the engine, like it's running on a couple cylinders. I have a Fix-It module installed on the service port and the app on my phone. i stop and do an error repair in my phone and the engine runs fine.

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