AutoCodes – Mercury – P0460 Mercury

P0460 Mercury Code - Fuel Level Sensor 'A' Circuit

Quick Answer

The fuel level sensor is mounted in the fuel level sensor unit. Common causes include Faulty Fuel Level Sensor, Fuel Level Sensor harness is open or shorted, Fuel Level Sensor 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: P0460 Mercury indicates Fuel Level Sensor 'A' Circuit.
Common causes: Common causes include Faulty Fuel Level Sensor, Fuel Level Sensor harness is open or shorted, Fuel Level Sensor 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 16,938

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 29, 2022

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
Comments
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Code P0460 Mercury Description

The fuel level sensor is mounted in the fuel level sensor unit. The sensor detects a fuel level in the fuel tank and transmits a signal to the Engine Control Module (ECM). The fuel level sensor consists of two parts, one is mechanical float and the other side is a variable resistor. The fuel level sensor output voltage changes depending on the movement of the fuel mechanical float. The Diagnostic Trouble Code (DTC) will set when, even though the vehicle is parked, a signal being varied is sent from the fuel level sensor to the Engine Control Module.

OBDII Code P0460 Mercury - Fuel Level Sensor 'A' Circuit - AutoCodes.com — P0460 Mercury Code - Fuel Level Sensor 'A' Circuit

What does this mean?

What are the Possible Causes of the DTC P0460 Mercury?

Faulty Fuel Level Sensor
Fuel Level Sensor harness is open or shorted
Fuel Level Sensor circuit poor electrical connection
Faulty combination meter

How to Fix the DTC P0460 Mercury?

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 does this mean?

Code Tech Notes

There is a factory service bulletin for the following Mercury Models:

2003-2004 Mercury Grand Marquis
2003-2004 Mercury Grand Marquis Factory Service Bulletin OBDII Code P0460

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0460 Mercury 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.