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P16A2 Chevrolet Code - Throttle Position Sensor Communication Circuit Performance

Quick Answer

The P16A2 code for Chevrolet vehicles specifically relates to an issue with the Throttle Position Sensor (TPS) communication circuit performance. Common causes include Faulty Throttle Position Sensor, Wiring issues in the communication circuit, Malfunctioning Engine Control Module (ECM). 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 Position Sensor, Wiring issues in the communication circuit, Malfunctioning Engine Control Module (ECM).
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 06, 2024
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Code P16A2 Chevrolet Description

The P16A2 code for Chevrolet vehicles specifically relates to an issue with the Throttle Position Sensor (TPS) communication circuit performance. The TPS is a crucial component of the engine control system, as it monitors the position of the throttle valve and sends this information to the Engine Control Module (ECM). The ECM then uses this data to calculate the correct air-fuel mixture for optimal engine performance.

OBDII Code P16A2 Chevrolet - Throttle Position Sensor Communication Circuit Performance
P16A2 Chevrolet Code - Throttle Position Sensor Communication Circuit Performance

Common Causes of P16A2 Chevrolet

  1. Faulty Throttle Position Sensor
  2. Wiring issues in the communication circuit
  3. Malfunctioning Engine Control Module (ECM)
  4. Poor connection between components
  5. Water damage or corrosion in the circuit

Symptoms of P16A2 Chevrolet

  1. Rough idling or stalling
  2. Hesitation or surging during acceleration
  3. Poor fuel economy
  4. Engine misfires
  5. Inability to start the engine

How to Fix P16A2 Chevrolet

  1. Diagnose the issue by using a diagnostic scanner to retrieve the trouble code and inspect the TPS and related components.
  2. Test the Throttle Position Sensor using a multimeter to check for proper voltage and resistance.
  3. Inspect the wiring and connectors for any signs of damage or corrosion, repairing or replacing as necessary.
  4. Reset the ECM by clearing the trouble code and performing a throttle relearn procedure to recalibrate the sensor.
  5. Test drive the vehicle to ensure the issue has been resolved and the code does not reappear.

Cost to Fix P16A2 Chevrolet

The typical repair costs for addressing a P16A2 code related to the Throttle Position Sensor communication circuit performance can range from $150 to $400, including parts and labor. However, it's important to note that specific diagnosis time and labor rates can vary depending on the location, vehicle make and model, and engine type. Auto repair shops commonly charge between $80 and $150 per hour for labor, so it's advisable to check local rates for a more accurate estimate.

What does this mean?

Tech Notes for P16A2 Chevrolet





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Information for Specific Chevrolet Models

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, it’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.

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  • 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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