Fuel Pressure Monitoring
Table of contents
P1181 KIA Possible Causes
- Clogged Fuel Filter
- Restricted fuel system rail
- Fuel leak in fuel line
- Faulty Rail Pressure Sensor
- Rail Pressure Sensor harness is open or shorted
- Rail Pressure Sensor circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How do I fix code P1181 KIA?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P1181 KIA code
The cost of diagnosing the P1181 KIA code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1181 KIA Description
The Fuel Pressure Monitoring is used to detect the troubles and the fuel leakage in high-pressure system. The Engine Control Module (ECM) determines the rail pressure value as a function of the engine operating conditions and controls the fuel pressure regulator to ensure that the rail pressure reaches the required value. Fuel pressure in the fuel line including the pumps and injectors are continuously monitored during engine running. If the rail pressure is excessive, the fuel pressure regulator opens and a portion of the fuel returns from the rail to the fuel tank via a collector line. If the rail pressure is too low, the Fuel pressure regulator closes. The fuel pressure regulator closes. the fuel pressure regulator is installed in the tail end of the high-pressure accumulator. In case of the insufficient fuel supply in the fuel line, the engine symptoms will occur a shutdown and a starting impossible. The Diagnostic Trouble Code (DTC) will set if extremely low or high pressure in the fuel line is being read by the ECM during driving cycles.