P16E5 2015 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 2015 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 2015 GMC Sierra Description
What are the Possible Causes of the DTC P16E5 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 P16E5 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 P16E5 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 P16E5 2015 GMC Sierra code?
Need more information on how to fix the P16E5 2015 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P16E5 2015 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P16E5 2015 GMC Sierra Code
What does the OBDII code P16E5 mean for a 2015 GMC Sierra?
It indicates a high voltage issue in Sensor Communication Circuit 3, which could affect engine performance or sensor functionality.
What are common symptoms of code P16E5 on a 2015 GMC Sierra?
Symptoms may include a check engine light, poor engine performance, erratic sensor readings, or difficulty starting the vehicle.
What causes the P16E5 code on a 2015 GMC Sierra?
Common causes include wiring issues, a faulty sensor, damaged connectors, or an issue with the powertrain control module (PCM).
How can I diagnose the P16E5 code on my 2015 GMC Sierra?
Start by inspecting the wiring and connectors in Sensor Communication Circuit 3 for damage or corrosion, then check the sensor and PCM for faults.
Can I drive my 2015 GMC Sierra with the P16E5 code?
It’s not recommended, as the issue could lead to further damage or unreliable performance. Address the code as soon as possible.
How do you fix the P16E5 code on a 2015 GMC Sierra?
Repairs may involve replacing damaged wiring, connectors, or the affected sensor. In some cases, reprogramming or replacing the PCM is necessary.
How much does it cost to fix the P16E5 code on a 2015 GMC Sierra?
Repair costs vary but typically range from $100 to $500 depending on whether wiring, sensors, or the PCM need replacement.
Can a bad battery cause the P16E5 code on a 2015 GMC Sierra?
Yes, a weak or faulty battery can cause voltage irregularities that might trigger this code.
Do I need special tools to fix the P16E5 code on a 2015 GMC Sierra?
Yes, an OBDII scanner and a multimeter are useful for diagnosing and verifying repairs related to this code.
Is the P16E5 code on a 2015 GMC Sierra a common problem?
It’s not a widely reported issue, but it can occur due to age-related wear or electrical problems in the vehicle.
Discuss the causes and fixes for P16E5 2015 GMC Sierra OBDII Code
Code P16E5 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.
