P16E4 2015 GMC Sierra Code - Sensor Communication Circuit 3 Low 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
- P16E4 2015 GMC Sierra indicates Sensor Communication Circuit 3 Low 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 P16E4 2015 GMC Sierra Description
What are the Possible Causes of the DTC P16E4 2015 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 P16E4 2015 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 P16E4 2015 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 P16E4 2015 GMC Sierra code?
Need more information on how to fix the P16E4 2015 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P16E4 2015 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P16E4 2015 GMC Sierra Code
1. What are common symptoms of OBDII code P16E4 in a 2015 GMC Sierra?
- Common symptoms include rough idling, poor engine performance, and illuminated check engine light.
2. What does the OBDII code P16E4 "Sensor Communication Circuit 3 Low Voltage" indicate in a 2015 GMC Sierra?
- This code indicates that there is a low voltage condition detected in the communication circuit of sensor 3.
3. What are possible causes of OBDII code P16E4 in a 2015 GMC Sierra?
- Possible causes include a faulty sensor, damaged wiring or connectors, a defective engine control module (ECM), or a weak battery.
4. How can I diagnose the OBDII code P16E4 in my 2015 GMC Sierra?
- Diagnose the code by inspecting sensor 3 and its circuit for any visible damage, testing the sensor's voltage, and checking the wiring connections for continuity.
5. Can I continue driving my 2015 GMC Sierra with the OBDII code P16E4 present?
- It is not recommended to continue driving with this code present, as it can lead to further engine issues and potential damage if left unresolved.
6. How can I repair OBDII code P16E4 in my 2015 GMC Sierra?
- Repair options include replacing the faulty sensor, repairing or replacing damaged wiring or connectors, resetting the ECM, and ensuring a strong battery connection.
7. Will resetting the check engine light make the OBDII code P16E4 disappear?
- Resetting the check engine light may temporarily clear the code, but it is important to diagnose and address the underlying issue to prevent it from reoccurring.
8. Is it possible to prevent OBDII code P16E4 from occurring in my 2015 GMC Sierra?
- Regular maintenance, including checking and replacing sensors as needed, inspecting wiring for damage, and keeping the battery in good condition, can help prevent this code from occurring.
9. Can a DIY enthusiast repair OBDII code P16E4 in a 2015 GMC Sierra?
- Depending on your skill level and access to tools, DIY enthusiasts can attempt to repair this code by following diagnostic procedures and replacing components as needed.
10. How long does it typically take to repair OBDII code P16E4 in a 2015 GMC Sierra?
- The repair time can vary based on the exact cause of the code, but it may take anywhere from 1 to 4 hours to diagnose and fix the issue, depending on the complexity of the repair needed.
Discuss the causes and fixes for P16E4 2015 GMC Sierra OBDII Code
Code P16E4 2015 GMC Sierra comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
