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Engine-Codes – GMC – P0192 GMC

P0192 GMC Code - Fuel Rail Pressure Sensor Circuit Low Input

Quick Answer

The P0192 GMC code indicates that there is a low input signal coming from the fuel rail pressure sensor circuit. Common causes include Faulty fuel rail pressure sensor, Damaged wiring or connectors in the sensor circuit, ECM 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
P0192 GMC indicates Fuel Rail Pressure Sensor Circuit Low Input.
Common causes
Common causes include Faulty fuel rail pressure sensor, Damaged wiring or connectors in the sensor circuit, ECM 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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P0192 GMC Description

The P0192 GMC code indicates that there is a low input signal coming from the fuel rail pressure sensor circuit. The fuel rail pressure sensor is a crucial component in the vehicle's fuel system, as it measures the pressure in the fuel rail and sends this information to the engine control module (ECM). The ECM uses this data to adjust the fuel delivery to the engine, ensuring optimal performance and fuel efficiency.

OBDII Code P0192 GMC - Fuel Rail Pressure Sensor Circuit Low Input
P0192 GMC Code - Fuel Rail Pressure Sensor Circuit Low Input

Common Causes of P0192 GMC

  1. Faulty fuel rail pressure sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. ECM malfunction
  4. Low fuel pressure in the fuel system
  5. Clogged fuel filter

Symptoms of P0192 GMC

  1. Decreased fuel efficiency
  2. Rough idling or stalling
  3. Hesitation or jerking during acceleration
  4. Engine misfires
  5. Loss of power

How to Fix P0192 GMC

  1. Perform a diagnostic scan to confirm the P0192 code and pinpoint the exact cause of the low input signal.
  2. Inspect the fuel rail pressure sensor, wiring, and connectors for any damage or corrosion. Replace any faulty components.
  3. Test the fuel pressure in the system to ensure it is within the manufacturer's specifications. Address any issues with low fuel pressure.
  4. Clear the code from the ECM and perform a test drive to ensure the issue has been resolved.
  5. If the problem persists, further diagnostics may be required to identify any underlying issues with the fuel system.

Cost to Fix P0192 GMC

The typical repair costs for addressing a P0192 GMC code can vary depending on the specific cause of the issue. In general, replacing a faulty fuel rail pressure sensor can cost anywhere from $100 to $300, including parts and labor. However, if the issue is more complex and requires additional diagnostics or repairs, the cost could increase accordingly. It is advisable to consult with a trusted auto repair shop to get a more accurate estimate based on the specific circumstances of the vehicle. Labor rates at auto repair shops typically range between $80 and $150 per hour, but can vary based on location and other factors.

What does this mean?

Tech Notes for P0192 GMC

















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Information for Specific GMC Models

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 P0192 GMC Code

1. What does the OBDII code P0192 mean on a GMC vehicle?

P0192 indicates that the Powertrain Control Module (PCM) has detected a low voltage input from the fuel rail pressure sensor, which monitors fuel pressure in the rail.

2. What are the common symptoms of a P0192 code on a GMC?

Symptoms may include difficulty starting, rough idling, reduced engine performance, stalling, poor fuel economy, and an illuminated Check Engine Light.

3. What causes the P0192 code to appear on a GMC vehicle?

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

4. Can I drive my GMC with a P0192 code?

Driving with a P0192 code is not recommended as it can lead to poor performance or engine stalling, which may cause unsafe driving conditions.

5. How do I diagnose a P0192 code on a GMC?

Start by checking the wiring and connectors for damage or corrosion, test the fuel rail pressure sensor for proper operation, and use a diagnostic scan tool to monitor fuel pressure readings.

6. How do I fix the P0192 code on a GMC vehicle?

Repairs may include replacing the fuel rail pressure sensor, repairing damaged wiring, cleaning corroded connectors, or replacing the fuel pump if it's malfunctioning.

7. Can a clogged fuel filter cause the P0192 code?

While not a direct cause, a clogged fuel filter can reduce fuel flow and pressure, potentially triggering a related issue that could lead to a P0192 code.

8. Is a P0192 code expensive to repair on a GMC?

Repair costs vary depending on the root cause, but replacing the fuel rail pressure sensor typically costs between $150 and $300, including parts and labor.

9. What tools are needed to troubleshoot a P0192 code?

Basic tools include a digital multimeter to test electrical connections, a diagnostic scan tool to read live data, and possibly a fuel pressure gauge to verify pressure levels.

10. Can a bad PCM cause a P0192 code on a GMC?

While rare, a malfunctioning PCM can misinterpret sensor signals or provide incorrect voltage, potentially causing the P0192 code. This should be checked after ruling out simpler causes.

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