AutoCodes – Mercury – P090A Mercury

P090A Mercury Code - Clutch 'B' Actuator Control Circuit/Open

Quick Answer

Clutch motor 2 is a 3-phase bi-directional Direct Current (DC) motor that is controlled by the Transmission Control Module (TCM). Common causes include Faulty Clutch Motor, Clutch Motor harness is open or shorted, Clutch Motor 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: P090A Mercury indicates Clutch 'B' Actuator Control Circuit/Open.
Common causes: Common causes include Faulty Clutch Motor, Clutch Motor harness is open or shorted, Clutch Motor 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 549

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 Aug 21, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P090A Mercury Description

Clutch motor 2 is a 3-phase bi-directional Direct Current (DC) motor that is controlled by the Transmission Control Module (TCM). The TCM monitors the clutch motor position using three Hall-effect sensor inputs. The Diagnostic Trouble Code (DTC) will set when the TCM detects an open circuit on one of the 3 phase circuits.

OBDII Code P090A Mercury - Clutch 'B' Actuator Control Circuit/Open - AutoCodes.com — P090A Mercury Code - Clutch 'B' Actuator Control Circuit/Open

What does this mean?

What are the Possible Causes of the DTC P090A Mercury?

Faulty Clutch Motor
Clutch Motor harness is open or shorted
Clutch Motor circuit poor electrical connection
Faulty Clutch Position Sensor
Faulty Transmission Control Module (TCM)

How to Fix the DTC P090A 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 P090A 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.

Frequently Asked Questions about P090A Mercury Code

1. What are the common symptoms of OBDII code P090A in a Mercury vehicle?

- Common symptoms include difficulty shifting gears, clutch slippage, illuminated Check Engine Light, and decreased vehicle performance.

2. What does the OBDII code P090A in a Mercury indicate?

- The code indicates a problem with the Clutch 'B' Actuator Control Circuit, specifically an open circuit.

3. What are the possible causes of OBDII code P090A in a Mercury?

- Possible causes include a faulty clutch actuator, damaged wiring or connectors in the control circuit, low clutch fluid level, or a defective clutch position sensor.

4. How can I diagnose the issue related to OBDII code P090A in my Mercury?

- Diagnose the issue by inspecting the clutch actuator and its wiring, checking the clutch fluid level, and using a scan tool to monitor the clutch position sensor readings.

5. What are the repair options for resolving OBDII code P090A in a Mercury?

- Repair options may include replacing the faulty clutch actuator, repairing or replacing damaged wiring or connectors, refilling clutch fluid, or calibrating the clutch position sensor.

6. Can I continue driving my Mercury with OBDII code P090A present?

- It is not recommended to continue driving with this code as it can lead to further damage to the clutch system and affect the vehicle's performance.

7. How much does it typically cost to repair OBDII code P090A in a Mercury?

- The cost of repairs can vary depending on the specific issue, but it may range from $200 to $800, including parts and labor.

8. Will resetting the Check Engine Light make OBDII code P090A go away in a Mercury?

- Resetting the Check Engine Light may temporarily clear the code, but it will reappear if the underlying issue causing P090A is not addressed.

9. Are there any DIY tips for troubleshooting OBDII code P090A in a Mercury?

- DIY tips include checking for loose or damaged wiring, ensuring proper clutch fluid levels, and inspecting the clutch actuator for any visible signs of damage.

10. How long does it take to repair OBDII code P090A in a Mercury?

- The repair time can vary depending on the extent of the issue and the availability of parts, but it may take a few hours to a full day for a mechanic to diagnose and fix the problem.