AutoCodesGMC – P0193 2016 GMC Sierra

P0193 2016 GMC Sierra Code - Fuel Rail Pressure Sensor Circuit High Input

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
P0193 2016 GMC Sierra indicates Fuel Rail Pressure Sensor Circuit High Input.
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.
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Code Popularity 264
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 30, 2022
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Code P0193 2016 GMC Sierra Description

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. The fuel rail pressure sensor transmits fuel pressure and temperature information via serial data to the ECM. When the fuel pressure is high, the signal voltage is high. When the fuel pressure is low, the signal voltage is low. The ECM controls the fuel pressure regulator, which regulates high-pressure fuel that goes to the fuel injector rails and the injectors. The Diagnostic Trouble Code (DTC) will be set if the Fuel Rail Pressure Sensor 1 is greater than a predefined threshold for greater than 1s.
OBDII Code P0193 2016 GMC Sierra - Fuel Rail Pressure Sensor Circuit High Input - AutoCodes.com
P0193 2016 GMC Sierra Code - Fuel Rail Pressure Sensor Circuit High Input

What are the Possible Causes of the DTC P0193 2016 GMC Sierra?

  • 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 P0193 2016 GMC Sierra?

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 P0193 2016 GMC Sierra 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 P0193 2016 GMC Sierra code?

Need more information on how to fix the P0193 2016 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0193 2016 GMC Sierra Code

What does OBDII code P0193 mean for a 2016 GMC Sierra?

P0193 indicates the fuel rail pressure sensor has detected a high input voltage, suggesting an issue with the sensor or related components.

What are the common symptoms of code P0193 in a 2016 GMC Sierra?

Symptoms may include poor fuel economy, difficulty starting, engine stalling, rough idling, and an illuminated check engine light.

What causes the P0193 code on a 2016 GMC Sierra?

Common causes include a faulty fuel rail pressure sensor, damaged wiring or connectors, fuel system issues, or a malfunctioning PCM.

Can I drive my 2016 GMC Sierra with code P0193?

Driving with this code can lead to engine performance issues or damage. It’s best to address the problem promptly.

How do you diagnose the P0193 code on a 2016 GMC Sierra?

Diagnosis typically involves checking the fuel rail pressure sensor, inspecting wiring and connectors for damage, and testing the fuel system.

Can a bad fuel rail pressure sensor trigger the P0193 code?

Yes, a faulty fuel rail pressure sensor is a common cause of this code.

How much does it cost to repair the P0193 code on a 2016 GMC Sierra?

Repair costs can vary but typically range between $150 and $400, depending on whether the sensor, wiring, or other components need replacement.

What tools are needed to troubleshoot the P0193 code on a 2016 GMC Sierra?

You’ll need an OBDII scanner, a multimeter for testing voltage, and basic tools for inspecting and replacing parts.

Can a fuel system issue cause the P0193 code on a 2016 GMC Sierra?

Yes, problems like excessive fuel pressure or a clogged fuel line can cause this code.

Does clearing the P0193 code fix the problem on a 2016 GMC Sierra?

No, clearing the code without addressing the underlying issue will likely cause the code to return.

Discuss the causes and fixes for P0193 2016 GMC Sierra OBDII Code

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