Engine-Codes - Generic - P1181

P1181 Code - Fuel Delivery System Malfunction High

- Code Popularity: 58,232 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P1181?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Restriction in the fuel line
  • Plugged fuel filter
  • Faulty Fuel Pressure Regulator
  • Faulty Fuel Rail Solenoid Shutoff Valve
  • Fuel Rail Solenoid Shutoff Valve harness is open or shorted
  • Fuel Rail Solenoid Shutoff Valve circuit poor electrical connection
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How to Fix the DTC P1181?

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 pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P1181 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P1181 Code Mean?

The Powertrain Control Module (PCM) receives Fuel Tank Pressure (FTP) information from the Natural Gas module (NG), which uses the information to infer Fuel Rail Pressure (FRP). The Diagnostic Trouble Code (DTC) will set and the test fails when the inferred pressure is less than a maximum calibrated value.

P1181 Code - Fuel Delivery System Malfunction High

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Code P1181 Information for Specific Makes

  • P1181 Audi Linear Oxygen Sensor Reference Voltage Open Circuit
  • P1181 BMW O2 Sensor Signal Circuit Slow Switching From Rich to Lean Bank 2 Sensor 2
  • P1181 Ford Fuel Delivery System Malfunction High
  • P1181 Hyundai Fuel Pressure Monitoring  
  • P1181 KIA Fuel Pressure Monitoring
  • P1181 Lincoln Fuel Delivery System Malfunction High
  • P1181 Mercury Fuel Delivery System Malfunction High
  • P1181 MINI O2 Sensor Signal Circuit Slow Switching From Rich to Lean Bank 2 Sensor 2
  • P1181 Saab Long Term Fuel Trim Additive Max Value Air/Fuel Too Lean
  • P1181 Volkswagen Linear Oxygen Sensor Reference Voltage Open Circuit

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