AutoCodes – Cadillac – P0192 Cadillac

P0192 Cadillac Code - Fuel Rail Pressure Sensor Circuit Low 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
P0192 Cadillac indicates Fuel Rail Pressure Sensor Circuit Low 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 2,004
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 P0192 Cadillac 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 2.6 s.
OBDII Code P0192 Cadillac - Fuel Rail Pressure Sensor Circuit Low Input - AutoCodes.com
P0192 Cadillac Code - Fuel Rail Pressure Sensor Circuit Low Input

What are the Possible Causes of the DTC P0192 Cadillac?

  • 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 P0192 Cadillac?

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 P0192 Cadillac 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 P0192 Cadillac code?

Need more information on how to fix the P0192 Cadillac code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0192 Cadillac code diagnosed by a professional: Find a repair shop in your area

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 Cadillac Code

1. What are common symptoms of OBDII code P0192 in a Cadillac related to the fuel rail pressure sensor circuit?

The common symptoms include poor engine performance, rough idling, stalling, and a noticeable decrease in fuel efficiency.

2. What are the possible causes of OBDII code P0192 in a Cadillac indicating a low input from the fuel rail pressure sensor circuit?

Potential causes include a faulty fuel rail pressure sensor, issues with the sensor wiring or connectors, fuel pump problems, or a clogged fuel filter.

3. How can I diagnose the OBDII code P0192 in a Cadillac related to the fuel rail pressure sensor circuit?

You can diagnose this code by checking the fuel pressure using a gauge, inspecting the sensor wiring for damage, testing the sensor itself, and scanning for any related trouble codes.

4. What steps can be taken to repair OBDII code P0192 in a Cadillac caused by a low input from the fuel rail pressure sensor circuit?

Repair options may include replacing the fuel rail pressure sensor, repairing or replacing damaged wiring or connectors, addressing issues with the fuel pump or filter, and clearing the trouble code.

5. Can driving with OBDII code P0192 in a Cadillac indicating a low input from the fuel rail pressure sensor circuit cause further damage?

Continuing to drive with this code present can potentially lead to more severe engine issues and decreased performance, so it is advisable to address the problem promptly.

6. How crucial is it to fix OBDII code P0192 in a Cadillac related to the fuel rail pressure sensor circuit?

It is important to address this code promptly to ensure proper engine performance, fuel efficiency, and to prevent potential damage to other engine components.

7. Are there any preventive measures to avoid encountering OBDII code P0192 in a Cadillac due to the fuel rail pressure sensor circuit issue?

Regular maintenance, such as fuel system inspections, using high-quality fuel, and addressing any minor issues promptly, can help prevent this code from occurring.

8. Is it possible to reset OBDII code P0192 in a Cadillac caused by a low input from the fuel rail pressure sensor circuit without making any repairs?

While clearing the trouble code may temporarily turn off the check engine light, it is crucial to diagnose and address the underlying issue to prevent it from reoccurring.

9. How long does it typically take to repair OBDII code P0192 in a Cadillac related to the fuel rail pressure sensor circuit?

The repair time can vary depending on the exact cause of the issue, but it may take anywhere from 1-3 hours to diagnose and fix the problem.

10. Can a DIY enthusiast with basic automotive knowledge repair OBDII code P0192 in a Cadillac caused by the fuel rail pressure sensor circuit issue?

While some repairs may be accessible to DIY enthusiasts, diagnosing and fixing issues related to the fuel rail pressure sensor circuit may require specialized tools and expertise, so it is advisable to consult a professional mechanic.

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