AutoCodes – Generic – P027A

P027A Code - Fuel Pump Module 'B' Control Circuit/Open

Quick Answer

The Powertrain Control Module (PCM) monitors the Fuel Pump Command (FPC) circuit for a concern. Common causes include Faulty Fuel Pump Command (FPC), FPC Harness is open or shorted, FPC circuit poor electrical connection. 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: P027A indicates Fuel Pump Module 'B' Control Circuit/Open.
Common causes: Common causes include Faulty Fuel Pump Command (FPC), FPC Harness is open or shorted, FPC circuit poor electrical connection.
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 9,546

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 Jun 02, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P027A Description

The Powertrain Control Module (PCM) monitors the Fuel Pump Command (FPC) circuit for a concern. When the PCM commands the Fuel Pump (FP) ON, the PCM is able to detect a short to voltage on the FPC circuit. When the PCM commands the FP OFF, the PCM is able to detect an open circuit or a short to ground on the FPC circuit. The test fails if the voltage is less than or greater than a calibrated limit, for a calibrated amount of time.

OBDII Code P027A - Fuel Pump Module 'B' Control Circuit/Open - AutoCodes.com — P027A Code - Fuel Pump Module 'B' Control Circuit/Open

What does this mean?

What are the Possible Causes of the DTC P027A?

Faulty Fuel Pump Command (FPC)
FPC Harness is open or shorted
FPC circuit poor electrical connection

How to Fix the DTC P027A?

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 P027A 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 P027A code?

Need more information on how to fix the P027A code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific Makes

P027A Ford — Fuel Pump Module 'B' Control Circuit/Open
P027A Lincoln — Fuel Pump Module 'B' Control Circuit/Open

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.