P0191 2014 GMC Sierra Code - Fuel Rail Pressure Sensor Performance
Quick Answer
The P0191 diagnostic trouble code (DTC) for a 2014 GMC Sierra relates to the Fuel Rail Pressure Sensor Performance. Common causes include Faulty fuel rail pressure sensor, Wiring or connector issues related to the fuel rail pressure sensor, Fuel pump malfunction. 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 GMC Sierra indicates Fuel Rail Pressure Sensor Performance.
- Common causes
- Common causes include Faulty fuel rail pressure sensor, Wiring or connector issues related to the fuel rail pressure sensor, Fuel pump malfunction.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P0191 2014 GMC Sierra Description
The P0191 diagnostic trouble code (DTC) for a 2014 GMC Sierra relates to the Fuel Rail Pressure Sensor Performance. This code indicates that the fuel rail pressure sensor is not providing the expected performance or readings, which can impact the vehicle's fuel delivery system. The fuel rail pressure sensor is responsible for monitoring the fuel pressure in the fuel rail and transmitting this data to the engine control module (ECM). If the sensor is not functioning properly, it can lead to issues with fuel delivery, engine performance, and overall drivability.
Common Causes of P0191 2014 GMC Sierra
- Faulty fuel rail pressure sensor
- Wiring or connector issues related to the fuel rail pressure sensor
- Fuel pump malfunction
- Fuel filter clogged or restricted
- Fuel pressure regulator failure
Symptoms of P0191 2014 GMC Sierra
- Check Engine Light illuminated
- Poor fuel efficiency
- Engine misfires
- Rough idling
- Engine stalling
How to Fix P0191 2014 GMC Sierra
- Diagnose the issue using a scan tool to confirm the P0191 code and pinpoint the exact cause of the problem.
- Inspect the fuel rail pressure sensor, wiring, and connectors for any signs of damage or corrosion. Replace or repair as needed.
- Test the fuel pump and fuel pressure regulator to ensure they are functioning correctly. Replace if necessary.
- Check and replace the fuel filter if it is clogged or restricted.
- Clear the DTC and reset the ECM to see if the issue has been resolved.
Cost to Fix P0191 2014 GMC Sierra
The cost of repairing a P0191 code on a 2014 GMC Sierra can vary depending on the specific cause of the issue. Typically, the cost of replacing a fuel rail pressure sensor can range from $100 to $300, while labor costs can add another $100 to $200. If additional components such as the fuel pump or fuel filter need to be replaced, the total repair cost could increase accordingly. As mentioned earlier, the specific diagnosis time and labor rates at auto repair shops can vary, so it's advisable to obtain quotes from local shops for a more accurate estimate.
Need more information about the P0191 2014 GMC Sierra code?
Need more information on how to fix the P0191 2014 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0191 2014 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0191 2014 GMC Sierra Code
No Frequently Asked Questions about P0191 2014 GMC Sierra Code found.
Discuss the causes and fixes for P0191 2014 GMC Sierra OBDII Code
Code P0191 2014 GMC Sierra comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.