P127D 2016 Chevrolet Silverado Code - Fuel Rail Pressure Sensor 2 Circuit 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 Sensor 2, Fuel Rail Pressure Sensor 2 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
- P127D 2016 Chevrolet Silverado indicates Fuel Rail Pressure Sensor 2 Circuit High Voltage.
- Common causes
- Common causes include Low or no fuel, Faulty Fuel Rail Pressure Sensor 2, Fuel Rail Pressure Sensor 2 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 P127D 2016 Chevrolet Silverado Description
What are the Possible Causes of the DTC P127D 2016 Chevrolet Silverado?
- Low or no fuel
- Faulty Fuel Rail Pressure Sensor 2
- Fuel Rail Pressure Sensor 2 harness is open or shorted
- Fuel Rail Pressure Sensor 2 circuit poor electrical connection
- Faulty Fuel Pump
How to Fix the DTC P127D 2016 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 P127D 2016 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 P127D 2016 Chevrolet Silverado code?
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Frequently Asked Questions about P127D 2016 Chevrolet Silverado Code
1. What does OBDII code P127D mean on a 2016 Chevrolet Silverado?
P127D indicates that the Powertrain Control Module (PCM) has detected a high voltage issue in the Fuel Rail Pressure Sensor 2 circuit.
2. What are the common symptoms of code P127D on a 2016 Silverado?
Symptoms may include poor engine performance, difficulty starting, reduced fuel efficiency, and the Check Engine Light being illuminated.
3. What causes the P127D code to appear?
Common causes include a faulty fuel rail pressure sensor, damaged wiring or connectors in the sensor circuit, or a malfunctioning PCM.
4. Can I drive my 2016 Chevrolet Silverado with a P127D code?
Driving with this code is not recommended, as it can lead to engine performance issues and potentially cause further damage to the fuel system.
5. How do I diagnose the P127D code on a 2016 Silverado?
Start by inspecting the wiring and connectors for damage or corrosion, then test the fuel rail pressure sensor with a multimeter to check for proper voltage readings.
6. How do I fix the P127D code on my Silverado?
Repairs may involve replacing the fuel rail pressure sensor, repairing damaged wiring or connectors, or reprogramming or replacing the PCM if necessary.
7. How much does it cost to repair a P127D code on a 2016 Chevrolet Silverado?
The cost varies depending on the issue. Replacing the fuel rail pressure sensor typically costs $150–$300, while addressing wiring issues or PCM replacement could cost more.
8. Can a dirty fuel system cause the P127D code?
While a dirty fuel system is unlikely to directly cause P127D, it could contribute to fuel delivery issues that exacerbate the problem. Cleaning the system may help as part of broader maintenance.
9. Is a P127D code related to low fuel pressure?
No, P127D specifically indicates high voltage in the sensor circuit, but it could indirectly affect fuel pressure readings if the sensor is malfunctioning.
10. What tools are needed to troubleshoot the P127D code?
You’ll need an OBDII scanner, a multimeter for testing electrical components, and possibly a repair manual for reference.
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