AutoCodes – Mercury – P025D Mercury

P025D Mercury Code - Fuel Pump Module Control Circuit High

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: P025D Mercury indicates Fuel Pump Module Control Circuit High.
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 993

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 May 17, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P025D Mercury 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 P025D Mercury - Fuel Pump Module Control Circuit High - AutoCodes.com — P025D Mercury Code - Fuel Pump Module Control Circuit High

What does this mean?

What are the Possible Causes of the DTC P025D Mercury?

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

How to Fix the DTC P025D 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P025D 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.

Need more information about the P025D Mercury code?

Need more information on how to fix the P025D Mercury code? Get Access to Factory Service Manuals

Need Help with the Code?

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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.

Frequently Asked Questions about P025D Mercury Code

1. What are the common symptoms of OBDII code P025D in a Mercury related to the fuel pump module control circuit high?

- Common symptoms include poor engine performance, reduced fuel efficiency, and in some cases, the vehicle may not start at all.

2. What are the possible causes of OBDII code P025D in a Mercury triggering the fuel pump module control circuit high?

- The code may be caused by a faulty fuel pump module, a damaged wiring harness, a defective fuel pump control module, or issues with the vehicle's powertrain control module (PCM).

3. How can I diagnose the OBDII code P025D in a Mercury indicating the fuel pump module control circuit high?

- Diagnosis typically involves using a professional OBDII scanner to retrieve the code, inspecting the wiring and connectors related to the fuel pump module, and testing the fuel pump control module and related components for proper functionality.

4. Is it safe to drive my Mercury with the OBDII code P025D related to the fuel pump module control circuit high?

- It is not recommended to drive the vehicle with this code present, as it may lead to further damage and potential safety issues. It's best to address the issue promptly.

5. Can I repair the OBDII code P025D in my Mercury myself, or do I need to take it to a mechanic?

- While some DIY enthusiasts may attempt the repair, diagnosing and fixing issues related to the fuel pump module control circuit high can be complex. It's recommended to seek the expertise of a qualified mechanic.

6. How much does it typically cost to repair OBDII code P025D in a Mercury due to the fuel pump module control circuit high?

- The cost of repair can vary depending on the exact cause of the issue, the labor rates of the mechanic, and any replacement parts needed. It's advisable to obtain quotes from different repair shops.

7. Can a faulty fuel pump module cause OBDII code P025D in a Mercury?

- Yes, a faulty fuel pump module is one of the possible culprits for triggering the code related to the fuel pump module control circuit high in a Mercury.

8. What are some preventive maintenance tips to avoid OBDII code P025D related to the fuel pump module control circuit high in a Mercury?

- Regularly inspecting the fuel system components, keeping up with scheduled maintenance, and addressing any fuel system issues promptly can help prevent the occurrence of this code.

9. Can a weak battery or alternator cause OBDII code P025D in a Mercury due to the fuel pump module control circuit high?

- While a weak battery or alternator can potentially cause electrical issues, they are less likely to directly trigger this specific code. It's important to rule out other potential causes first.

10. How urgent is it to address OBDII code P025D in a Mercury related to the fuel pump module control circuit high?

- It is advisable to address this code promptly to prevent any further damage to the fuel system components and ensure the vehicle operates safely and efficiently.