AutoCodes – Mercury – P2633 Mercury

P2633 Mercury Code - Fuel Pump 'B' Control Circuit Low

Quick Answer

The Engine Control Module (ECM) monitors the Fuel Pump Control Circuit. Common causes include Faulty fuel pump relay, Faulty fuel pump, Fuel pump 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: P2633 Mercury indicates Fuel Pump 'B' Control Circuit Low.
Common causes: Common causes include Faulty fuel pump relay, Faulty fuel pump, Fuel pump 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 1,108

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 Jan 23, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2633 Mercury Description

The Engine Control Module (ECM) monitors the Fuel Pump Control Circuit. The ECM sets the OBDII code when the Fuel Pump Control Circuit is out of factory specifications.

OBDII Code P2633 Mercury - Fuel Pump 'B' Control Circuit Low - AutoCodes.com — P2633 Mercury Code - Fuel Pump 'B' Control Circuit Low

What does this mean?

What are the Possible Causes of the DTC P2633 Mercury?

Faulty fuel pump relay
Faulty fuel pump
Fuel pump harness is open or shorted
Fuel pump circuit poor electrical connection
Faulty fuel pump control module (if applicable)

How to Fix the DTC P2633 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 P2633 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 P2633 Mercury code?

Need more information on how to fix the P2633 Mercury code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2633 Mercury code diagnosed by a professional: Find a repair shop in your area

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 P2633 Mercury Code

1. What are the common symptoms of OBDII code P2633 in a Mercury related to the fuel pump 'B' control circuit?

- Common symptoms include difficulty starting the vehicle, engine stalling or hesitation, reduced fuel efficiency, and illuminated Check Engine Light.

2. What are the possible causes of the OBDII code P2633 indicating a low fuel pump 'B' control circuit in a Mercury?

- Possible causes may include a faulty fuel pump driver module, damaged wiring or connectors in the control circuit, or a malfunctioning fuel pump.

3. How can I diagnose the OBDII code P2633 in my Mercury to determine if the issue is related to the fuel pump 'B' control circuit?

- Diagnose the code by performing a thorough inspection of the fuel pump driver module, checking for damaged wiring or loose connections, and testing the fuel pump's functionality.

4. Is it safe to continue driving my Mercury with the OBDII code P2633 present indicating a low fuel pump 'B' control circuit?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to potential fuel delivery issues and engine performance problems.

5. Are there any simple repair tips for addressing the OBDII code P2633 in a Mercury related to the fuel pump 'B' control circuit?

- Simple repair tips may include checking and tightening any loose wiring connections, replacing damaged wiring, or replacing the fuel pump driver module if necessary.

6. Can a DIY enthusiast fix the OBDII code P2633 indicating a low fuel pump 'B' control circuit in a Mercury, or is professional assistance recommended?

- Depending on the skill level and experience of the DIY enthusiast, some repairs related to this code may be manageable, but professional assistance is generally recommended for complex issues.

7. How do I reset the Check Engine Light after addressing the OBDII code P2633 in my Mercury related to the fuel pump 'B' control circuit?

- To reset the Check Engine Light, use an OBDII scanner to clear the code after the repair has been completed, ensuring that the issue has been resolved.

8. Is the repair for the OBDII code P2633 in a Mercury related to the fuel pump 'B' control circuit covered under any warranty or recall?

- Check with your local Mercury dealership or manufacturer to inquire about any existing warranties or recalls that may cover the repair for this specific OBDII code.

9. What should I do if the OBDII code P2633 in my Mercury persists even after attempting to address the fuel pump 'B' control circuit issue?

- If the code persists, it is recommended to seek professional diagnosis and repair to identify any underlying issues that may be causing the recurring problem.

10. How can regular maintenance help prevent the occurrence of the OBDII code P2633 indicating a low fuel pump 'B' control circuit in a Mercury?

- Regular maintenance, such as inspecting the fuel system components, checking wiring integrity, and ensuring proper fuel pump function, can help prevent issues leading to this OBDII code.