P0192 Code - Fuel Rail Pressure Sensor Circuit Low Input
Quick Answer
The FRP sensor is a diaphragm strain gauge device. Common causes include Low or no fuel, Faulty Rail Pressure (FRP) Sensor, FRP 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 indicates Fuel Rail Pressure Sensor Circuit Low Input.
- Common causes
- Common causes include Low or no fuel, Faulty Rail Pressure (FRP) Sensor, FRP 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.
Code P0192 Description
The FRP sensor is located on the fuel rail, and provides a feedback signal to indicate the fuel rail pressure to the Powertrain Control Module (PCM). The PCM uses the FRP signal to command the correct injector timing and pulse width for correct fuel delivery at all speed and load conditions. The FRP sensor, along with the fuel volume regulator (part of the fuel injection pump), form a closed loop fuel pressure control system. An electrically faulted FRP sensor results in the deactivation of the fuel injection pump. Fuel pressure to injectors is then provided only by the FP module. When the fuel injection pump is de-energized and the injectors are active, the fuel rail pressure is approximately 70 kPa (10 psi) lower than FP module pressure due to the pressure drop across the fuel injection pump. Thus, if the FP module pressure is 448 kPa (65 psi), then the fuel rail pressure would be approximately 379 kPa (55 psi) if the injectors are active.
What are the Possible Causes of the DTC P0192?
- Low or no fuel
- Faulty Rail Pressure (FRP) Sensor
- FRP harness is open or shorted
- FRP circuit poor electrical connection
- Faulty Fuel Pump
How to Fix the DTC P0192?
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 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.
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Information for Specific Makes
- P0192 Acura — Fuel Rail Pressure Sensor Circuit Low Voltage
- P0192 Buick — Fuel Rail Pressure Sensor Circuit Low Input
- P0192 Cadillac — Fuel Rail Pressure Sensor Circuit Low Input
- P0192 Chevrolet — Fuel Rail Pressure Sensor Circuit Low Input
- P0192 Chrysler — Fuel Pressure Sensor Voltage Too Low
- P0192 Dodge — Fuel Pressure Sensor Voltage Too Low
- P0192 Ford — Fuel Rail Pressure Sensor Circuit Low Input
- P0192 GMC — Fuel Rail Pressure Sensor Circuit Low Input
- P0192 Honda — Fuel Rail Pressure Sensor Circuit Low Voltage
- P0192 Isuzu — Fuel Rail Pressure Sensor Circuit Low Voltage
- P0192 Jeep — Fuel Pressure Sensor Voltage Too Low
- P0192 Lexus — Fail Rail Pressure Sensor Circuit Low Input
- P0192 Lincoln — Fuel Rail Pressure Sensor Circuit Low Input
- P0192 Mazda — Fuel Rail Pressure Sensor Circuit Low Input
- P0192 Mercedes-Benz — Fuel Rail Pressure Sensor Circuit Low Input
- P0192 Mercury — Fuel Rail Pressure Sensor Circuit Low Input
- P0192 RAM — Fuel Pressure Sensor Voltage Too Low
- P0192 Volkswagen — Fuel Rail Pressure Sensor 'A' Circuit Low
Frequently Asked Questions about P0192 Code
1. What are the common symptoms of OBDII code P0192 (Fuel Rail Pressure Sensor Circuit Low Input)?
- Common symptoms include poor engine performance, rough idling, stalling, decreased fuel efficiency, and the illumination of the Check Engine Light.
2. What can cause the OBDII code P0192 to trigger?
- The code P0192 is typically triggered by a faulty fuel rail pressure sensor, damaged sensor wiring, low fuel pressure, or issues with the fuel pump.
3. How can I diagnose the cause of OBDII code P0192?
- Diagnosing the cause of P0192 involves checking the fuel rail pressure sensor for proper operation, inspecting the sensor wiring for damage, testing fuel pressure, and scanning for other related codes.
4. What are the potential risks of driving with OBDII code P0192 active?
- Driving with code P0192 can potentially lead to engine damage, poor fuel efficiency, and increased emissions. It is advisable to address the issue promptly to avoid further issues.
5. Can a DIY enthusiast repair OBDII code P0192 at home?
- While diagnosing the issue can be done by a DIY enthusiast using a scan tool and basic tools, repairing or replacing the fuel rail pressure sensor may require more advanced technical knowledge and tools.
6. Are there any quick fixes or temporary solutions for OBDII code P0192?
- Quick fixes such as resetting the Check Engine Light using a scan tool may temporarily clear the code, but addressing the root cause of the issue is necessary for a permanent solution.
7. Is it safe to drive my vehicle to a repair shop with OBDII code P0192 active?
- If the vehicle is exhibiting severe symptoms like stalling or rough idling, it is recommended to have the vehicle towed to a repair shop to prevent further damage or safety risks.
8. How much does it typically cost to repair OBDII code P0192?
- The cost of repairing code P0192 can vary depending on the underlying cause, parts needed, and labor rates. It is advisable to obtain a diagnostic and repair estimate from a trusted mechanic.
9. Can a faulty fuel rail pressure sensor be cleaned or repaired, or does it need to be replaced?
- In most cases, a faulty fuel rail pressure sensor cannot be repaired and will need to be replaced with a new sensor to resolve the P0192 code.
10. What steps should I take after replacing the fuel rail pressure sensor to clear OBDII code P0192?
- After replacing the fuel rail pressure sensor, it is important to clear the trouble codes using a scan tool and test drive the vehicle to ensure the issue has been resolved.
Discuss the causes and fixes for P0192 OBDII Code
-
2007 ram 2500hd 6.7 turbo diesel. Sets this code, scanner shows 10,150psi fuel pressure at all times, even with engine off & sensor unplugged. Probe Fuel pressure sensor plug-in & have ref voltage showing at both input & output (4.8v). referred to dealer for new ECM, problem fixed-cost $3000-at Tate Branch Chrysler-dodge.
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