P127D 2017 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 2017 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 2017 Chevrolet Silverado Description
What are the Possible Causes of the DTC P127D 2017 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 2017 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 2017 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 2017 Chevrolet Silverado code?
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Frequently Asked Questions about P127D 2017 Chevrolet Silverado Code
1. What does the OBDII code P127D mean on a 2017 Chevrolet Silverado?
P127D indicates that the Engine Control Module (ECM) has detected a high voltage condition in the Fuel Rail Pressure Sensor 2 circuit.
2. What are the common symptoms of code P127D in a 2017 Chevy Silverado?
Symptoms may include reduced engine performance, difficulty starting, rough idling, poor fuel economy, and an illuminated check engine light.
3. What causes the P127D code to appear in a 2017 Chevrolet Silverado?
Common causes include a faulty fuel rail pressure sensor, wiring issues like damaged or corroded connectors, or a malfunctioning ECM.
4. How do I diagnose the P127D code on my Silverado?
Start by inspecting the fuel rail pressure sensor and its wiring for damage or corrosion. Use a multimeter to check for proper voltage and continuity in the circuit. A professional scan tool can also help confirm the sensor's voltage readings.
5. Can I drive my 2017 Chevy Silverado with the P127D code?
While the truck may still operate, driving with this code is not recommended as it can lead to reduced performance, potential stalling, or further damage to the fuel system.
6. How do I fix the P127D code on a Silverado?
The fix may involve replacing the fuel rail pressure sensor, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming the ECM if necessary.
7. How much does it cost to repair the P127D code on a 2017 Chevrolet Silverado?
Repair costs can range from $150 to $500 or more, depending on whether the issue is with the sensor, wiring, or ECM.
8. Is a faulty fuel rail pressure sensor the only cause of P127D?
No, other potential causes include wiring harness issues, corroded electrical connections, or a malfunctioning ECM.
9. Can a dirty fuel filter cause the P127D code on my Silverado?
A dirty fuel filter is unlikely to cause P127D directly, but it can contribute to fuel delivery issues that might affect pressure readings indirectly.
10. Do I need a professional mechanic to fix the P127D code?
While basic inspections like checking connectors and wires can be done at home, repairing or replacing components like the fuel rail pressure sensor or ECM may require professional tools and expertise.
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