P16E5 2016 GMC Sierra 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 2016 GMC Sierra 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.
Code P16E5 2016 GMC Sierra Description
What are the Possible Causes of the DTC P16E5 2016 GMC Sierra?
- 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 2016 GMC Sierra?
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 2016 GMC Sierra 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 2016 GMC Sierra code?
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Frequently Asked Questions about P16E5 2016 GMC Sierra Code
1. What does OBDII code P16E5 mean on a 2016 GMC Sierra?
P16E5 indicates a "Sensor Communication Circuit 3 High Voltage" issue, meaning there is an abnormal high voltage signal detected in a specific sensor communication circuit.
2. What are the common symptoms of code P16E5 on a 2016 GMC Sierra?
Symptoms may include a check engine light, poor engine performance, erratic behavior of related systems, or reduced fuel efficiency.
3. What causes the P16E5 code to appear on a GMC Sierra?
Common causes include faulty wiring, damaged connectors, a malfunctioning sensor, or an issue with the engine control module (ECM).
4. Can a loose connection cause the P16E5 code?
Yes, loose or corroded connectors in the sensor communication circuit can cause a high voltage reading and trigger the code.
5. How is the P16E5 code diagnosed?
A mechanic will use a scan tool to confirm the code, inspect the wiring and connectors for damage or corrosion, and test the sensor and ECM for proper operation.
6. Can I drive my 2016 GMC Sierra with the P16E5 code?
Driving with this code is not recommended as it may lead to further damage or reduced performance, depending on the affected system.
7. How can the P16E5 code be fixed on a GMC Sierra?
Repairs may include replacing a faulty sensor, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming the ECM.
8. Is the P16E5 code specific to one sensor or circuit?
The P16E5 code refers to "Sensor Communication Circuit 3," which means it is specific to a particular communication circuit or sensor in the system.
9. How much does it cost to fix the P16E5 code on a GMC Sierra?
Repair costs vary depending on the issue but typically range from $100 for minor wiring repairs to $500 or more for sensor or ECM replacement.
10. Can the P16E5 code be cleared without repairs?
Clearing the code without addressing the underlying issue may temporarily turn off the check engine light, but the code will likely return.
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