P127C 2016 Chevrolet Silverado Code - Fuel Rail Pressure Sensor 2 Circuit 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 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
- P127C 2016 Chevrolet Silverado indicates Fuel Rail Pressure Sensor 2 Circuit Low 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 P127C 2016 Chevrolet Silverado Description
What are the Possible Causes of the DTC P127C 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 P127C 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 P127C 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 P127C 2016 Chevrolet Silverado code?
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Frequently Asked Questions about P127C 2016 Chevrolet Silverado Code
1. What does the OBDII code P127C mean on a 2016 Chevrolet Silverado?
P127C indicates that the Fuel Rail Pressure Sensor 2 Circuit is experiencing low voltage, which suggests a problem with the fuel pressure sensor or its associated wiring.
2. What are the common symptoms of code P127C in a 2016 Chevy Silverado?
Symptoms may include reduced engine performance, rough idling, difficulty starting, poor fuel efficiency, or the Check Engine Light being illuminated.
3. What causes the P127C code to appear?
The code can be caused by a faulty fuel rail pressure sensor, damaged or corroded wiring, a loose or poor electrical connection, or issues with the powertrain control module (PCM).
4. Can I drive my 2016 Chevrolet Silverado with a P127C code?
It is not recommended to drive the vehicle for extended periods with this code, as it can lead to further engine performance issues or potential damage to the fuel system.
5. How do I diagnose the P127C code?
Start by inspecting the fuel rail pressure sensor, its wiring, and connectors for damage or corrosion. Use a multimeter to check for proper voltage and continuity, and scan live data with an OBDII scanner to monitor fuel pressure readings.
6. How do I fix the P127C code on my Silverado?
Repairs may include replacing the fuel rail pressure sensor, repairing or replacing damaged wiring or connectors, or, in rare cases, reprogramming the PCM.
7. How much does it cost to repair the P127C code?
The cost depends on the exact issue. Replacing a fuel rail pressure sensor typically costs $100-$300 for parts and labor. Wiring repairs can vary based on the extent of the damage.
8. Can a dirty fuel filter cause the P127C code?
While a dirty fuel filter can restrict fuel flow and cause performance issues, it is unlikely to directly cause the P127C code, which focuses on the sensor circuit voltage.
9. Will disconnecting the battery clear the P127C code?
Disconnecting the battery may temporarily clear the code, but if the underlying issue is not resolved, the code will return.
10. Do I need to reprogram the PCM to fix the P127C code?
Reprogramming the PCM is rarely required. It is usually only necessary if the PCM itself is faulty or if a software update addresses the issue.
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