AutoCodes – Isuzu – P0192 Isuzu

P0192 Isuzu Code - Fuel Rail Pressure Sensor Circuit Low Voltage

Quick Answer

The Fuel Rail Pressure (FRP) sensor is a diaphragm strain gauge device in which resistance changes with pressure. Common causes include Excessive resistance in the circuit, Low or no fuel, Wiring harness connector of the fuel pressure sensor. 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 Isuzu indicates Fuel Rail Pressure Sensor Circuit Low Voltage.
Common causes
Common causes include Excessive resistance in the circuit, Low or no fuel, Wiring harness connector of the fuel pressure sensor.
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 21,310
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0192 Isuzu Description

The Fuel Rail Pressure (FRP) sensor is a diaphragm strain gauge device in which resistance changes with pressure. The electrical resistance of a strain gauge increases as pressure increases, and the resistance decreases as the pressure decreases. The varying resistance affects the voltage drop across the sensor terminals and provides electrical signal to the Powertrain Control Module (PCM) corresponding to pressure.
Strain gauge type sensors are consider passive sensors. A passive sensor is connected to a voltage divider network so that varying the resistance of the passive sensor causes a variation in total current flow.
Voltage that is dropped across a fixed resistor in series with the sensor resistor determines the voltage signal at the PCM. This voltage signal is equal to the reference voltage minus the voltage drop across the fixed resistor.
The FRP sensor measures the pressure of the fuel near the fuel injectors. This signal is used by the PCM to adjust the fuel injector pulse width and meter fuel to each combustion cylinder.
OBDII Code P0192 Isuzu - Fuel Rail Pressure Sensor Circuit Low Voltage - AutoCodes.com
P0192 Isuzu Code - Fuel Rail Pressure Sensor Circuit Low Voltage

What are the Possible Causes of the DTC P0192 Isuzu?

  • Excessive resistance in the circuit
  • Low or no fuel
  • Wiring harness connector of the fuel pressure sensor
  • Fuel Rail Pressure Sensor
  • Fuel Pump

How to Fix the DTC P0192 Isuzu?

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 Isuzu 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 Isuzu code?

Need more information on how to fix the P0192 Isuzu 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 P0192 Isuzu Code

1. What does OBDII code P0192 for Isuzu indicate?

The P0192 code on an Isuzu refers to a low voltage condition in the fuel rail pressure sensor circuit.

2. What are the common symptoms of a P0192 code in an Isuzu?

Common symptoms of a P0192 code in an Isuzu may include rough idling, loss of power, hesitation during acceleration, and in some cases, stalling.

3. What are the possible causes of a P0192 code in an Isuzu?

The P0192 code in an Isuzu can be triggered by issues such as a faulty fuel rail pressure sensor, damaged sensor wiring, low fuel pressure, or a problem with the fuel pump.

4. How can I diagnose a P0192 code in my Isuzu?

Diagnosing a P0192 code in an Isuzu typically involves using a scan tool to retrieve the code, inspecting the fuel rail pressure sensor and its wiring, testing fuel pressure, and checking for any leaks in the fuel system.

5. Can I drive my Isuzu with a P0192 code?

It is not recommended to drive your Isuzu with a P0192 code, as it can lead to drivability issues and potentially cause further damage to the engine and fuel system.

6. How can I repair a P0192 code in my Isuzu?

Repairing a P0192 code in an Isuzu may involve replacing the fuel rail pressure sensor, repairing or replacing damaged wiring, addressing fuel pressure issues, or fixing any other underlying problems causing the low voltage condition.

7. Can a P0192 code in an Isuzu be cleared/reset?

Yes, a P0192 code in an Isuzu can be cleared/reset using an OBDII scan tool after the underlying issue has been diagnosed and repaired.

8. Is the fuel rail pressure sensor easy to replace in an Isuzu?

The difficulty of replacing the fuel rail pressure sensor in an Isuzu can vary depending on the model and engine configuration. It may require basic mechanical skills and tools.

9. Are there any maintenance tips to prevent a P0192 code in my Isuzu?

To prevent a P0192 code in your Isuzu, it's important to maintain regular fuel system inspections, address any fuel leaks promptly, and ensure proper fuel quality and pressure.

10. Do I need a professional mechanic to fix a P0192 code in my Isuzu?

While some DIY enthusiasts may be able to diagnose and repair a P0192 code in an Isuzu, it is recommended to consult a professional mechanic for accurate diagnosis and proper repair to avoid further issues.

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