AutoCodes – Chevrolet – P0088 Chevrolet

P0088 Chevrolet Code - Fuel Rail/System Pressure Too High

Quick Answer

The fuel injection pump supplies high-pressure fuel to the fuel injection rails, and then to the fuel injectors through high-pressure pipes. Common causes include Sticking Fuel Rail Pressure Regulator, Faulty Fuel Rail Pressure Regulator. 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: P0088 Chevrolet indicates Fuel Rail/System Pressure Too High.
Common causes: Common causes include Sticking Fuel Rail Pressure Regulator, Faulty Fuel Rail Pressure Regulator.
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 15,660

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 Nov 20, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P0088 Chevrolet Description

The fuel injection pump supplies high-pressure fuel to the fuel injection rails, and then to the fuel injectors through high-pressure pipes. The Fuel Rail Pressure (FRP) sensor is a three-wire sensor mounted in the right fuel injection rail. The FRP sensor uses a 5-volt reference circuit, a signal circuit, and a low reference circuit to monitor fuel rail pressure. This information is sent to the Engine Control Module (ECM) to assist in the fueling of the engine. The Diagnostic Trouble Code (DTC) will set when the actual FRP is more than the desired FRP.

OBDII Code P0088 Chevrolet - Fuel Rail/System Pressure Too High - AutoCodes.com — P0088 Chevrolet Code - Fuel Rail/System Pressure Too High

What does this mean?

What are the Possible Causes of the DTC P0088 Chevrolet?

Sticking Fuel Rail Pressure Regulator
Faulty Fuel Rail Pressure Regulator

How to Fix the DTC P0088 Chevrolet?

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 P0088 Chevrolet 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.

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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.