Fuel Rail Pressure Sensor
Closes the loop on high-pressure fuel control. A drifting sensor is more dangerous than a dead one: reading low, it will drive the pump to over-pressure the rail while the module believes it is behaving correctly. Verifying it against an independent gauge is worth the effort before expensive parts are replaced.
Also known as: frp sensor, rail pressure sensor, fuel pressure sensor, frp
Referenced by 77 codes
Codes involving this component (77)
- P0093 Fuel System Leak Detected — Large Leak Stop driving Critical
- P0002 Fuel Volume Regulator A Control Circuit Range/Performance Stop driving High
- P0087 Fuel Rail/System Pressure — Too Low Bank 1 Stop driving High
- P0088 Fuel Rail/System Pressure — Too High Bank 1 Stop driving High
- P0089 Fuel Pressure Regulator A Performance High
- P00C6 Fuel Rail Pressure Too Low - Engine Cranking Bank 1 High
- P016F Closed Loop Fuel Pressure Control At Limit - Pressure Too Low High
- P0190 Fuel Rail Pressure Sensor Circuit Bank 1 Stop driving High
- P0191 Fuel Rail Pressure Sensor Circuit Range/Performance Bank 1 Stop driving High
- P0192 Fuel Rail Pressure Sensor Circuit Low Bank 1 Stop driving High
- P0193 Fuel Rail Pressure Sensor Circuit High Bank 1 Stop driving High
- P0194 Fuel Rail Pressure Sensor Circuit Intermittent/Erratic Bank 1 Stop driving High
- P02CC Cylinder 1 Fuel Injector A Offset Learning At Min Limit High
- P02CD Cylinder 1 Fuel Injector A Offset Learning At Max Limit High
- P02D2 Cylinder 4 Fuel Injector A Offset Learning At Min Limit High
- P02D4 Cylinder 5 Fuel Injector A Offset Learning At Min Limit High
- P2293 Fuel Pressure Regulator B Performance High
- P2A69 Alternative Fuel Rail Pressure Regulator Inlet Pressure Sensor Circuit High
- P2A6A Alternative Fuel Rail Pressure Regulator Inlet Pressure Sensor Range/Performance High
- P2A6B Alternative Fuel Rail Pressure Regulator Inlet Pressure Sensor Circuit Low High
- P2A6C Alternative Fuel Rail Pressure Regulator Inlet Pressure Sensor Circuit High High
- P2A6D Alternative Fuel Rail Pressure Regulator Inlet Pressure Sensor Circuit Intermittent/Erratic High
- P2A6E Alternative Fuel Rail Pressure Regulator Inlet Pressure Too Low High
- P2A6F Alternative Fuel Rail Pressure Regulator Inlet Pressure Too High High
- P2A75 Alternative Fuel Hydraulic Pump Pressure Sensor Circuit High
Other components in Fuel Delivery
- Fuel Injector 530
- Fuel Injector Control Module 148
- Alternative Fuel Control Module 135
- High-Pressure Fuel Pump 79
- Fuel Pump 48
- Fuel Volume Regulator 46
- Fuel Temperature Sensor 45
- Fuel Filter 43
- Fuel Level Sensor 27
- Fuel Pump Control Module 22
- Fuel Shutoff Valve 14
- Injection Pump 13
- Injection Control Pressure Sensor 12
- Fuel Composition Sensor 11
- Injection Pressure Regulator 10
- High-Pressure Oil Pump 8
- Air Assist Control Valve 6
- Water in Fuel Sensor 6
- Fuel Transfer Pump 6
- Fuel Supply Heater 3
- Fuel Pump Strainer 2
Information, not instruction
CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.
Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
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