P16E5 GMC 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 GMC 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 GMC Description
What are the Possible Causes of the DTC P16E5 GMC?
- 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 GMC?
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 GMC 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 GMC code?
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Information for Specific GMC Models
- P16E5 2014 GMC Sierra — Sensor Communication Circuit 3 High Voltage
- P16E5 2015 GMC Sierra — Sensor Communication Circuit 3 High Voltage
- P16E5 2016 GMC Sierra — Sensor Communication Circuit 3 High Voltage
- P16E5 2017 GMC Sierra — Sensor Communication Circuit 3 High Voltage
- P16E5 2018 GMC Sierra — Sensor Communication Circuit 3 High Voltage
Frequently Asked Questions about P16E5 GMC Code
1. What are the common symptoms of OBDII code P16E5 in a GMC vehicle?
- Common symptoms include rough idling, poor engine performance, decreased fuel efficiency, and potential illumination of the Check Engine Light.
2. What could be the possible causes of OBDII code P16E5 in a GMC, indicating Sensor Communication Circuit 3 High Voltage?
- Possible causes may include a faulty sensor, damaged wiring or connectors in the communication circuit, software issues, or a problem in the vehicle's electronic control module.
3. How can I diagnose the Sensor Communication Circuit 3 High Voltage issue related to code P16E5 in my GMC?
- Diagnosing this issue typically involves using an OBDII scanner to read the code, checking the sensor's wiring and connectors for damage, and performing a thorough inspection of the sensor itself.
4. What are some repair tips for addressing OBDII code P16E5 in a GMC due to Sensor Communication Circuit 3 High Voltage?
- Repair tips may include repairing or replacing damaged wiring or connectors, resetting the code and monitoring for its return, and seeking professional assistance if the issue persists.
5. Is it safe to continue driving my GMC with OBDII code P16E5 indicating Sensor Communication Circuit 3 High Voltage?
- It is generally not recommended to drive your vehicle with unresolved OBDII codes, as they can potentially lead to further damage or performance issues. It's best to address the underlying problem promptly.
6. Can I reset OBDII code P16E5 related to Sensor Communication Circuit 3 High Voltage in my GMC myself?
- You can attempt to reset the code using an OBDII scanner, but it's important to also diagnose and address the root cause of the issue to prevent the code from reoccurring.
7. How much does it typically cost to repair OBDII code P16E5 due to Sensor Communication Circuit 3 High Voltage in a GMC?
- The cost of repair can vary depending on the specific cause of the issue, but it may involve expenses for parts, labor, and potential diagnostic fees if professional assistance is sought.
8. Are there any recalls or technical service bulletins related to OBDII code P16E5 in GMC vehicles?
- It's recommended to check with a GMC dealership or visit the National Highway Traffic Safety Administration (NHTSA) website to see if there are any relevant recalls or technical service bulletins for this specific code.
9. Can extreme weather conditions or environmental factors trigger OBDII code P16E5 in a GMC?
- While extreme weather conditions or environmental factors may not directly cause this specific code, they can sometimes exacerbate existing issues related to sensor communication circuits in a vehicle.
10. How can I prevent the occurrence of OBDII code P16E5 indicating Sensor Communication Circuit 3 High Voltage in my GMC in the future?
- Regularly maintaining your vehicle, addressing any electrical issues promptly, and ensuring proper installation of sensors and wiring can help prevent the recurrence of this code in the future.
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