AutoCodes – Chevrolet – P16E5 2018 Chevrolet Silverado

P16E5 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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 1,150
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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado - Sensor Communication Circuit 3 High Voltage - AutoCodes.com
P16E5 2018 Chevrolet Silverado Code - Sensor Communication Circuit 3 High Voltage

What are the Possible Causes of the DTC P16E5 2018 Chevrolet Silverado?

  • 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 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P16E5 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 P16E5 2018 Chevrolet Silverado code?

Need more information on how to fix the P16E5 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P16E5 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 P16E5 2018 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P16E5 in a 2018 Chevrolet Silverado?

- Common symptoms include rough idling, reduced engine performance, and illuminated check engine light.

2. What does the OBDII code P16E5 "Sensor Communication Circuit 3 High Voltage" indicate in a 2018 Chevrolet Silverado?

- The code suggests that there is a high voltage detected in the communication circuit of sensor 3 in the vehicle.

3. What are the possible causes of OBDII code P16E5 in a 2018 Chevrolet Silverado?

- Potential causes include a faulty sensor, damaged wiring or connectors, software issues, or a malfunctioning engine control module (ECM).

4. How can I diagnose the OBDII code P16E5 in my 2018 Chevrolet Silverado?

- Diagnosis involves using an OBDII scanner to read the code, checking the wiring and connectors for damage, testing the sensor's voltage, and verifying the ECM's functionality.

5. Can I continue driving my 2018 Chevrolet Silverado with the OBDII code P16E5 present?

- It is not recommended to drive the vehicle with this code active, as it can lead to further engine issues and potential damage if left unattended.

6. How can I repair OBDII code P16E5 in my 2018 Chevrolet Silverado?

- Repair options include replacing the faulty sensor, repairing damaged wiring or connectors, updating the ECM software, or replacing the ECM if necessary.

7. Is it safe to clear the OBDII code P16E5 in my 2018 Chevrolet Silverado using an OBDII scanner?

- Clearing the code may temporarily turn off the check engine light, but it is crucial to diagnose and address the underlying issue causing the fault code to prevent future problems.

8. How much does it typically cost to repair OBDII code P16E5 in a 2018 Chevrolet Silverado?

- The cost of repair can vary depending on the specific cause of the code, but it may range from $100 to $500 or more, including parts and labor.

9. Can a DIY enthusiast with basic automotive knowledge fix OBDII code P16E5 in a 2018 Chevrolet Silverado?

- Depending on the cause of the code, a DIY enthusiast may be able to address simple issues like damaged wiring or connectors, but more complex repairs may require professional assistance.

10. How often does the OBDII code P16E5 "Sensor Communication Circuit 3 High Voltage" occur in 2018 Chevrolet Silverado vehicles?

- The occurrence of this specific code can vary, but it is not uncommon in vehicles with sensor communication issues or electrical system malfunctions.

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