P0191 2014 Chevrolet Silverado Code - Fuel Rail Pressure Sensor Performance
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 (FRP) Sensor, Fuel Rail Pressure 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
- P0191 2014 Chevrolet Silverado indicates Fuel Rail Pressure Sensor Performance.
- Common causes
- Common causes include Low or no fuel, Faulty Fuel Rail Pressure (FRP) Sensor, Fuel Rail Pressure 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 P0191 2014 Chevrolet Silverado Description
What are the Possible Causes of the DTC P0191 2014 Chevrolet Silverado?
- Low or no fuel
- Faulty Fuel Rail Pressure (FRP) Sensor
- Fuel Rail Pressure harness is open or shorted
- Fuel Rail Pressure circuit poor electrical connection
- Faulty Fuel Pump
How to Fix the DTC P0191 2014 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 P0191 2014 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 P0191 2014 Chevrolet Silverado code?
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Frequently Asked Questions about P0191 2014 Chevrolet Silverado Code
1. What does the OBDII code P0191 mean for a 2014 Chevrolet Silverado?
P0191 indicates a problem with the fuel rail pressure sensor's performance, typically due to inconsistent or incorrect readings from the sensor.
2. What are the symptoms of code P0191 in a 2014 Chevrolet Silverado?
Common symptoms include engine misfires, difficulty starting, reduced fuel efficiency, a rough idle, and the check engine light turning on.
3. What causes code P0191 in a 2014 Chevrolet Silverado?
Possible causes include a faulty fuel rail pressure sensor, damaged wiring or connectors, a failing fuel pump, or clogged fuel injectors.
4. Can driving with code P0191 damage my 2014 Chevrolet Silverado?
Yes, prolonged driving with this code can lead to engine performance issues and potential damage due to improper fuel delivery.
5. How is code P0191 diagnosed in a 2014 Chevrolet Silverado?
Technicians typically use a scan tool to monitor fuel rail pressure readings, inspect wiring and connectors, and perform fuel system pressure tests.
6. How do I fix code P0191 on a 2014 Chevrolet Silverado?
Repairs may involve replacing the fuel rail pressure sensor, cleaning or replacing clogged fuel injectors, repairing damaged wiring, or replacing the fuel pump.
7. Can a dirty fuel filter trigger code P0191 on a 2014 Chevrolet Silverado?
Yes, a clogged fuel filter can restrict fuel flow, potentially causing erratic fuel pressure and triggering the P0191 code.
8. How much does it cost to repair code P0191 on a 2014 Chevrolet Silverado?
Repair costs vary but typically range from $150 to $500 depending on whether the sensor, fuel pump, or other components need replacement.
9. Can I clear code P0191 without fixing the issue on a 2014 Chevrolet Silverado?
Clearing the code without addressing the underlying issue may temporarily turn off the check engine light, but the problem will likely recur.
10. Is code P0191 common on a 2014 Chevrolet Silverado?
It’s not an uncommon code for vehicles with fuel system issues, especially if the fuel pressure sensor or related components are worn.
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