P00C6 2017 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 2017 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 2017 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 2017 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 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 P00C6 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 P00C6 2017 Chevrolet Silverado code?
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Frequently Asked Questions about P00C6 2017 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code P00C6 in a 2017 Chevrolet Silverado?
- Common symptoms include hard starting, extended cranking before the engine starts, rough idling, and potential stalling.
2. What can cause the OBDII code P00C6 to trigger in a 2017 Chevrolet Silverado?
- The code P00C6 typically triggers when the fuel rail pressure is lower than the specified threshold during engine cranking. Possible causes include a faulty fuel pump, fuel pressure regulator issues, clogged fuel filter, or a leak in the fuel system.
3. How serious is the OBDII code P00C6 in a 2017 Chevrolet Silverado?
- While the vehicle may still run with this code, it is not recommended to ignore it. Low fuel rail pressure can lead to poor engine performance, reduced fuel efficiency, and potential engine damage over time.
4. What are some DIY tips to troubleshoot the OBDII code P00C6 in a 2017 Chevrolet Silverado?
- You can start by checking the fuel pressure using a gauge, inspecting the fuel lines for leaks, ensuring the fuel filter is not clogged, and listening for unusual noises from the fuel pump during cranking.
5. Can a clogged fuel filter cause the OBDII code P00C6 in a 2017 Chevrolet Silverado?
- Yes, a clogged fuel filter can restrict fuel flow and lead to low fuel rail pressure during engine cranking, triggering the P00C6 trouble code.
6. How can I repair the OBDII code P00C6 in a 2017 Chevrolet Silverado?
- Depending on the underlying cause, repairs may involve replacing the fuel pump, fuel pressure regulator, fuel filter, or repairing any leaks in the fuel system. It's recommended to consult a qualified mechanic for a proper diagnosis and repair.
7. Is it safe to continue driving a 2017 Chevrolet Silverado with the OBDII code P00C6?
- It is not recommended to drive the vehicle extensively with this code present, as it can lead to potential engine issues and decreased performance. It's best to address the underlying problem as soon as possible.
8. How much does it typically cost to repair the OBDII code P00C6 in a 2017 Chevrolet Silverado?
- Repair costs can vary depending on the exact cause of the low fuel rail pressure. It's advisable to get a professional diagnosis to determine the specific repairs needed and associated costs.
9. Can weather conditions affect the OBDII code P00C6 in a 2017 Chevrolet Silverado?
- Extreme weather conditions, particularly very cold temperatures, can sometimes affect fuel system components and lead to issues with fuel pressure. It's important to consider environmental factors when diagnosing this code.
10. Will resetting the OBDII code P00C6 in a 2017 Chevrolet Silverado make it go away permanently?
- Resetting the code may temporarily clear the warning light, but if the underlying issue causing the low fuel rail pressure is not addressed, the code is likely to reappear. It's crucial to diagnose and repair the root cause of the problem to prevent future occurrences.
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