AutoCodes – Ford – P027B Ford

P027B Ford Code - Fuel Pump Module 'B' Control Circuit Range/Performance

Quick Answer

The fuel pump control module monitors the duty cycle and frequency of the signal it receives from the Powertrain Control Module (PCM). 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: P027B Ford indicates Fuel Pump Module 'B' Control Circuit Range/Performance.
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 6,555

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 P027B Ford Description

The fuel pump control module monitors the duty cycle and frequency of the signal it receives from the Powertrain Control Module (PCM). The fuel pump control module determines if the signal from the PCM on the Fuel Pump Command (FPC) circuit is a valid duty cycle and frequency. If the duty cycle or frequency is invalid, the fuel pump control module sends a 20% duty cycle signal on the fuel pump monitor (FPM) circuit to report the concern to the PCM. The test fails when the fuel pump control module is still reporting that it is receiving an invalid duty cycle or frequency from the PCM after a calibrated amount of time.

OBDII Code P027B Ford - Fuel Pump Module 'B' Control Circuit Range/Performance - AutoCodes.com — P027B Ford Code - Fuel Pump Module 'B' Control Circuit Range/Performance

What does this mean?

What are the Possible Causes of the DTC P027B Ford?

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

How to Fix the DTC P027B Ford?

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 P027B Ford 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.