AutoCodes – Generic – U016C

U016C Code - Lost Communication With Fuel Pump Control Module 'B'

Quick Answer

The Powertrain Control Module (PCM) monitors the Fuel Pump Monitor 2 (FPM2) circuit for the presence of a duty cycled signal. Common causes include Faulty Fuel Pump Control Module Relay, Faulty Fuel Pump Control Module, Fuel Pump Control Module harness is open or shorted. 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: U016C indicates Lost Communication With Fuel Pump Control Module 'B'.
Common causes: Common causes include Faulty Fuel Pump Control Module Relay, Faulty Fuel Pump Control Module, Fuel Pump Control Module harness is open or shorted.
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 5,208

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 Apr 02, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code U016C Description

The Powertrain Control Module (PCM) monitors the Fuel Pump Monitor 2 (FPM2) circuit for the presence of a duty cycled signal. If the FPM2 circuit is fixed at a low or high voltage, the PCM begins to increment a counter. The test fails when the PCM is still not detecting a duty cycled signal on the FPM2 circuit after a calibrated amount of time.

OBDII Code U016C - Lost Communication With Fuel Pump Control Module 'B' - AutoCodes.com — U016C Code - Lost Communication With Fuel Pump Control Module 'B'

What does this mean?

What are the Possible Causes of the DTC U016C?

Faulty Fuel Pump Control Module Relay
Faulty Fuel Pump Control Module
Fuel Pump Control Module harness is open or shorted
Fuel Pump Control Module circuit poor electrical connection

How to Fix the DTC U016C?

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 U016C 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 U016C code?

Need more information on how to fix the U016C code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U016C code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U016C Ford — Lost Communication With Fuel Pump Control Module 'B'
U016C Lincoln — Lost Communication With Fuel Pump Control Module 'B'
U016C Mercury — Lost Communication With Fuel Pump Control Module 'B'

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.