AutoCodes – Chevrolet – P16E5 Chevrolet

P16E5 Chevrolet Code - Sensor Communication Circuit 3 High Voltage

Quick Answer

The Engine Control Module (ECM) uses the Fuel Rail Pressure (FRP) sensor to constantly adjust the high-pressure fuel pump's feed rate so that the ideal pressure is permanently maintained in the high-pressure section (between the high-pressure fuel pump and the injectors) by means of closed-loop control. Common causes include Low or no fuel, Faulty Fuel Rail Pressure (FRP) Sensor, Fuel Rail Pressure harness is open or shorted. 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
P16E5 Chevrolet indicates Sensor Communication Circuit 3 High Voltage.
Common causes
Common causes include Low or no fuel, Faulty Fuel Rail Pressure (FRP) Sensor, Fuel Rail Pressure harness is open or shorted.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 24,334
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 30, 2022
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Code P16E5 Chevrolet Description

The Engine Control Module (ECM) uses the Fuel Rail Pressure (FRP) sensor to constantly adjust the high-pressure fuel pump's feed rate so that the ideal pressure is permanently maintained in the high-pressure section (between the high-pressure fuel pump and the injectors) by means of closed-loop control. The fuel rail pressure sensor transmits fuel pressure and temperature information via serial data to the ECM. When the fuel pressure is high, the signal voltage is high. When the fuel pressure is low, the signal voltage is low. The ECM controls the fuel pressure regulator, which regulates high-pressure fuel that goes to the fuel injector rails and the injectors. The Diagnostic Trouble Code (DTC) will be set if the Fuel Rail Pressure Sensor Signal is greater than a predefined threshold for greater than 2.6 s.
OBDII Code P16E5 Chevrolet - Sensor Communication Circuit 3 High Voltage - AutoCodes.com
P16E5 Chevrolet Code - Sensor Communication Circuit 3 High Voltage

What are the Possible Causes of the DTC P16E5 Chevrolet?

  • Low or no fuel
  • Faulty Fuel Rail Pressure (FRP) Sensor
  • Fuel Rail Pressure harness is open or shorted
  • Fuel Rail Pressure circuit poor electrical connection
  • Faulty Fuel Pump

How to Fix the DTC P16E5 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P16E5 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 P16E5 Chevrolet code?

Need more information on how to fix the P16E5 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P16E5 Chevrolet code diagnosed by a professional: Find a repair shop in your area

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 P16E5 Chevrolet Code

1. What are the common symptoms of OBDII code P16E5 on a Chevrolet related to Sensor Communication Circuit 3 High Voltage?

- Common symptoms may include poor engine performance, rough idling, decreased fuel efficiency, and the illumination of the Check Engine Light.

2. What could cause the Sensor Communication Circuit 3 High Voltage issue (P16E5) in a Chevrolet?

- Possible causes of this code include faulty sensor wiring, a malfunctioning sensor, issues with the vehicle's computer system, or a poor electrical connection.

3. How can I diagnose the Sensor Communication Circuit 3 High Voltage problem in my Chevrolet triggering OBDII code P16E5?

- Diagnosis typically involves using an OBDII scanner to retrieve the specific fault code, inspecting the sensor and its wiring for damage, and testing the circuit for proper voltage levels.

4. What is the recommended repair approach for fixing OBDII code P16E5 related to Sensor Communication Circuit 3 High Voltage in a Chevrolet?

- Repair options may include repairing or replacing damaged wiring, replacing the faulty sensor, ensuring proper electrical connections, or resetting the vehicle's computer system.

5. Can I continue driving my Chevrolet with OBDII code P16E5 indicating Sensor Communication Circuit 3 High Voltage issue?

- It is recommended to address the issue promptly to prevent potential damage to other components and to ensure optimal vehicle performance. Continued driving with this code illuminated may worsen the problem.

6. How much does it typically cost to repair OBDII code P16E5 on a Chevrolet due to Sensor Communication Circuit 3 High Voltage issue?

- Repair costs can vary depending on the specific cause of the problem, but it may range from a simple sensor replacement costing a few hundred dollars to more extensive repairs involving wiring and computer system diagnostics.

7. Are there any DIY tips for troubleshooting OBDII code P16E5 in a Chevrolet related to Sensor Communication Circuit 3 High Voltage?

- DIY enthusiasts can start by checking the sensor connections for any visible damage, ensuring proper wiring integrity, and resetting the code with an OBDII scanner before seeking professional help if needed.

8. How long does it take to fix OBDII code P16E5 due to Sensor Communication Circuit 3 High Voltage in a Chevrolet?

- The repair time can vary depending on the complexity of the issue. Simple fixes like sensor replacement may take an hour or two, while more involved repairs could require several hours or even a day at the mechanic's shop.

9. Can extreme weather conditions affect the likelihood of triggering OBDII code P16E5 on a Chevrolet with Sensor Communication Circuit 3 High Voltage issue?

- Yes, extreme temperatures or weather conditions can sometimes exacerbate electrical issues in a vehicle, potentially leading to the triggering of this particular OBDII code.

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