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Engine-Codes – Generic – P1185

P1185 Code - Fuel Pressure Monitoring-Maximum Pressure Exceeded

Quick Answer

The P1185 diagnostic trouble code indicates that the fuel pressure in the vehicle's fuel system has exceeded the maximum allowable pressure. Common causes include Faulty fuel pressure regulator, Clogged fuel filter, Malfunctioning fuel pump. 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
P1185 indicates Fuel Pressure Monitoring-Maximum Pressure Exceeded.
Common causes
Common causes include Faulty fuel pressure regulator, Clogged fuel filter, Malfunctioning fuel pump.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 30, 2024
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Code P1185 Description

The P1185 diagnostic trouble code indicates that the fuel pressure in the vehicle's fuel system has exceeded the maximum allowable pressure. This can lead to a variety of issues within the vehicle's systems, including potential damage to fuel injectors, fuel lines, and the fuel pump. Excessive fuel pressure can cause the engine to run rich, resulting in poor fuel economy, reduced performance, and increased emissions. If left unaddressed, this issue can lead to engine misfires, stalling, and even engine damage.

OBDII Code P1185 - Fuel Pressure Monitoring-Maximum Pressure Exceeded
P1185 Code - Fuel Pressure Monitoring-Maximum Pressure Exceeded

Common Causes of P1185

  1. Faulty fuel pressure regulator
  2. Clogged fuel filter
  3. Malfunctioning fuel pump
  4. Issues with the fuel pressure sensor
  5. Wiring or electrical problems in the fuel system

Symptoms of P1185

  1. Check Engine Light illuminated
  2. Decreased fuel efficiency
  3. Engine hesitation or stumbling
  4. Rough idling
  5. Strong fuel odor

How to Fix P1185

  1. Perform a diagnostic scan to confirm the P1185 code and identify the exact cause of the issue.
  2. Inspect the fuel pressure regulator, fuel filter, and fuel pump for any signs of damage or malfunction.
  3. Test the fuel pressure sensor to ensure it is working correctly.
  4. Repair or replace any faulty components identified during the diagnostic process.
  5. Clear the trouble code, reset the vehicle's computer, and perform a road test to verify that the issue has been resolved.

Cost to Fix P1185

The cost of repairing a P1185 code can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay anywhere from $200 to $500 for parts and labor. Keep in mind that prices may be higher at dealerships or in metropolitan areas, while independent shops may offer more competitive rates. It's recommended to obtain quotes from multiple auto repair shops to ensure you're getting a fair price for the necessary repairs.

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Code P1185 Information for Specific Makes

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.

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