P00C6 2018 Chevrolet Silverado Code - Fuel Rail Pressure Low During Engine Cranking
Quick Answer
The fuel rail pressure sensor detects fuel pressure within the fuel rail. Common causes include Faulty High Pressure Fuel Pump, Faulty Fuel Rail Pressure Sensor, High Pressure Fuel Pump 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
- P00C6 2018 Chevrolet Silverado indicates Fuel Rail Pressure Low During Engine Cranking.
- Common causes
- Common causes include Faulty High Pressure Fuel Pump, Faulty Fuel Rail Pressure Sensor, High Pressure Fuel Pump 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 P00C6 2018 Chevrolet Silverado Description
High pressure fuel is regulated by the high-pressure fuel pump actuator, which is a part of the high-pressure fuel pump. The high-pressure fuel pump actuator is a solenoid valve. The ECM provides a voltage on the actuator high control circuit and ground on the actuator low control circuit. Both circuits are controlled through output drivers within the ECM. When deactivated, both drivers are disabled. When activated, the high control circuit driver energizes the high-pressure fuel pump actuator, and the low control circuit driver Pulse-Width Modulates (PWM) the low control circuit to ground.
The high-pressure mechanical fuel pump is driven by three lobes on the camshaft. The ECM uses the camshaft and crankshaft position sensor inputs to synchronize the high-pressure fuel pump actuator with the position of each of the camshaft lobes. The ECM regulates fuel pressure by adjusting the portion of each pump stroke that provides fuel to the rail.
The ECM monitors the fuel rail fuel pressure sensor and the high-pressure fuel pump actuator to determine if the commanded and actual pressure are within a predetermined range, or if the amount of fuel pressure correction exceeds a calibrated pressure.
The Diagnostic Trouble Code (DTC) will set if the ECM detects that the fuel pressure is not rising or has fallen beyond acceptable limits during engine cranking.
What are the Possible Causes of the DTC P00C6 2018 Chevrolet Silverado?
- Faulty High Pressure Fuel Pump
- Faulty Fuel Rail Pressure Sensor
- High Pressure Fuel Pump harness is open or shorted
- High Pressure Fuel Pump electrical circuit poor connection
How to Fix the DTC P00C6 2018 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 P00C6 2018 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 P00C6 2018 Chevrolet Silverado code?
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Frequently Asked Questions about P00C6 2018 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code P00C6 in a 2018 Chevrolet Silverado?
The common symptoms include hard starting, extended cranking time, rough idling, and potentially stalling or hesitation during acceleration.
2. What are the possible causes of OBDII code P00C6 in a 2018 Chevrolet Silverado?
The code P00C6 typically indicates that the fuel rail pressure is lower than expected during engine cranking. Possible causes include a faulty fuel pump, clogged fuel filter, fuel pressure regulator issues, or a leaking fuel injector.
3. How can I diagnose the root cause of OBDII code P00C6 in my 2018 Chevrolet Silverado?
Diagnosing the issue involves checking the fuel pressure using a gauge, inspecting the fuel pump operation, testing the fuel pressure regulator, examining the fuel lines for leaks, and inspecting the fuel injectors for proper function.
4. Is it safe to continue driving my 2018 Chevrolet Silverado with OBDII code P00C6?
It is not recommended to drive the vehicle with OBDII code P00C6 as it can lead to poor engine performance, potential stalling, and other issues that may compromise safety and the health of the vehicle.
5. How can I repair OBDII code P00C6 in my 2018 Chevrolet Silverado?
Repair options may include replacing the fuel pump, cleaning or replacing the fuel filter, repairing or replacing the fuel pressure regulator, or addressing any fuel injector issues identified during diagnosis.
6. Can a DIY enthusiast fix OBDII code P00C6 in a 2018 Chevrolet Silverado?
While some aspects of diagnosing and repairing the issue may be within reach of a skilled DIY enthusiast, dealing with fuel system components can be complex and potentially hazardous. It is recommended to consult a professional mechanic for proper diagnosis and repair.
7. How much does it typically cost to repair OBDII code P00C6 in a 2018 Chevrolet Silverado?
The cost of repair can vary depending on the specific cause of the issue, the labor rates in your area, and whether you choose OEM or aftermarket parts. It's advisable to get estimates from multiple repair shops to compare.
8. Are there any preventive maintenance measures to avoid OBDII code P00C6 in a 2018 Chevrolet Silverado?
Regularly servicing the fuel system, including changing the fuel filter at recommended intervals, using quality fuel, and addressing any performance issues promptly, can help prevent fuel-related problems that trigger code P00C6.
9. Can extreme weather conditions contribute to triggering OBDII code P00C6 in a 2018 Chevrolet Silverado?
Extreme weather conditions, especially cold temperatures, can sometimes exacerbate existing fuel system issues, leading to lower fuel pressure during engine cranking. Ensuring the fuel system is in good condition can help mitigate such risks.
10. How long does it take to repair OBDII code P00C6 in a 2018 Chevrolet Silverado?
The repair time can vary based on the specific cause of the issue, the availability of parts, and the workload of the repair shop. Simple fixes like replacing a fuel filter may take less time than diagnosing and replacing a faulty fuel pump.
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