Engine-CodesMercury – P0C28 Mercury

P0C28 Mercury Code - Electric Transmission Fluid Pump Motor Current Low

Quick Answer

The P0C28 code for a Mercury vehicle indicates that there is an issue with the Electric Transmission Fluid Pump Motor Current being low. Common causes include Faulty transmission fluid pump motor, Damaged wiring or connectors, Malfunctioning transmission control module. 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
P0C28 Mercury indicates Electric Transmission Fluid Pump Motor Current Low.
Common causes
Common causes include Faulty transmission fluid pump motor, Damaged wiring or connectors, Malfunctioning transmission control module.
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.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P0C28 Mercury Description

The P0C28 code for a Mercury vehicle indicates that there is an issue with the Electric Transmission Fluid Pump Motor Current being low. The electric transmission fluid pump motor plays a crucial role in maintaining the proper pressure and flow of transmission fluid within the vehicle's transmission system. When the current is low, it can lead to a variety of issues that can impact the overall performance and efficiency of the vehicle.

OBDII Code P0C28 Mercury - Electric Transmission Fluid Pump Motor Current Low
P0C28 Mercury Code - Electric Transmission Fluid Pump Motor Current Low

Common Causes of P0C28 Mercury

  1. Faulty transmission fluid pump motor
  2. Damaged wiring or connectors
  3. Malfunctioning transmission control module
  4. Low transmission fluid levels
  5. Electrical issues within the transmission system

Symptoms of P0C28 Mercury

  1. Erratic shifting
  2. Transmission slippage
  3. Hesitation during acceleration
  4. Overheating of the transmission system
  5. Inability to move the vehicle

How to Fix P0C28 Mercury

  1. Begin by conducting a thorough inspection of the transmission fluid pump motor and related components.
  2. Test the current flow in the transmission fluid pump motor to determine if it is indeed low.
  3. Check for any damaged wiring or connectors and repair or replace as needed.
  4. Inspect the transmission control module for any faults and address any issues found.
  5. Refill the transmission fluid to the proper levels and reset the code to see if the issue persists.

Cost to Fix P0C28 Mercury

The typical repair costs for addressing a P0C28 code in a Mercury vehicle can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts and labor for this type of repair can range from $200 to $500. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's recommended to obtain quotes from multiple sources to get a more accurate estimate for your specific situation.

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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 P0C28 Mercury Code

1. What does the OBDII code P0C28 mean for a Mercury vehicle?

P0C28 indicates that the electric transmission fluid pump motor is experiencing a low current condition, which can affect transmission performance.

2. What are the common symptoms of code P0C28 in a Mercury?

Symptoms may include transmission overheating, reduced fuel efficiency, poor acceleration, and illumination of the check engine light.

3. What causes the P0C28 code to appear in a Mercury?

Possible causes include a faulty transmission fluid pump motor, wiring issues, a defective control module, or low transmission fluid levels.

4. Can I drive my Mercury with the P0C28 code active?

Driving with this code is not recommended, as it can lead to transmission overheating and potential long-term damage.

5. How do I diagnose the P0C28 code in my Mercury?

Diagnosis involves checking the transmission fluid level, inspecting the pump motor and electrical connections, and using a scan tool to monitor motor current.

6. What repairs can fix the P0C28 code in a Mercury?

Repairs may include replacing the electric transmission fluid pump motor, repairing damaged wiring, or updating/replacing the control module.

7. Is low transmission fluid a possible cause of the P0C28 code?

Yes, low or contaminated transmission fluid can cause the pump motor to draw insufficient current, triggering the code.

8. How much does it typically cost to fix the P0C28 code on a Mercury?

Repair costs can vary depending on the cause but typically range from $200 to $800, depending on parts and labor.

9. Can a software update fix the P0C28 code in a Mercury vehicle?

In some cases, a control module software update from the manufacturer may resolve the issue.

10. What tools are needed to troubleshoot the P0C28 code?

Tools such as an OBDII scan tool, a multimeter, and possibly a transmission fluid pressure tester are typically required for diagnosis.

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