AutoCodes – Jeep – P1155 Jeep

P1155 Jeep Code - Fuel Rail Pressure Malfunction Rail Pressure Is Too High

Quick Answer

The Engine Control Module (ECM) has determined that the fuel rail pressure is too low for a specific condition Common causes include Fuel system fault condition, Faulty fuel pressure solenoid, Air in fuel system. 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: P1155 Jeep indicates Fuel Rail Pressure Malfunction Rail Pressure Is Too High.
Common causes: Common causes include Fuel system fault condition, Faulty fuel pressure solenoid, Air in fuel system.
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.

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Code Popularity 3,558

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 03, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1155 Jeep Description

The Engine Control Module (ECM) has determined that the fuel rail pressure is too low for a specific condition

OBDII Code P1155 Jeep - Fuel Rail Pressure Malfunction Rail Pressure Is Too High - AutoCodes.com — P1155 Jeep Code - Fuel Rail Pressure Malfunction Rail Pressure Is Too High

What does this mean?

What are the Possible Causes of the DTC P1155 Jeep?

Fuel system fault condition
Faulty fuel pressure solenoid
Air in fuel system

How to Fix the DTC P1155 Jeep?

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 P1155 Jeep 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.

Need more information about the P1155 Jeep code?

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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.