AutoCodes – Generic – P090B

P090B Code - Clutch 'B' Actuator Control Circuit Performance

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: P090B indicates Clutch 'B' Actuator Control Circuit Performance.
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 5,392

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 P090B 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 P090B - Clutch 'B' Actuator Control Circuit Performance - AutoCodes.com — P090B Code - Clutch 'B' Actuator Control Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P090B?

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 P090B?

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 P090B 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 P090B code?

Need more information on how to fix the P090B code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P090B code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P090B Ford — Clutch 'B' Actuator Control Circuit Performance
P090B Lincoln — Clutch 'B' Actuator Control Circuit Performance
P090B Mercury — Clutch 'B' Actuator Control Circuit Performance

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 P090B Code

1. What are the common symptoms of OBDII code P090B?

Symptoms of OBDII code P090B may include difficulty shifting gears, a clutch that feels unresponsive, and the vehicle going into limp mode.

2. What are the possible causes of OBDII code P090B?

Possible causes of OBDII code P090B include a faulty clutch actuator, damaged wiring or connectors in the clutch actuator circuit, or a software issue in the transmission control module.

3. How can I diagnose OBDII code P090B?

Diagnosing OBDII code P090B involves using a scan tool to read the code, checking the clutch actuator and its circuit for any visible damage, and performing a thorough inspection of the wiring and connectors related to the clutch actuator.

4. Can I continue driving with OBDII code P090B present?

It is not recommended to continue driving with OBDII code P090B present, as it can lead to further damage to the transmission system. It is advisable to address the issue promptly.

5. What are some repair tips for OBDII code P090B?

Repair tips for OBDII code P090B include ensuring proper connection of the clutch actuator, repairing any damaged wiring or connectors, and, if necessary, replacing the clutch actuator or reprogramming the transmission control module.

6. How much does it typically cost to repair OBDII code P090B?

The cost of repairing OBDII code P090B can vary depending on the exact cause of the issue and the labor rates in your area. It is recommended to get a diagnosis from a qualified mechanic to determine the cost accurately.

7. Can OBDII code P090B be triggered by a malfunctioning sensor?

While OBDII code P090B is primarily related to the clutch actuator control circuit, a malfunctioning sensor elsewhere in the transmission system could potentially trigger this code as well. It's important to conduct a thorough diagnosis to pinpoint the exact cause.

8. Will resetting the OBDII code P090B clear the issue permanently?

Resetting the OBDII code P090B may temporarily clear the issue, but if the root cause of the problem is not addressed, the code is likely to reappear. It is important to diagnose and repair the underlying issue to prevent ongoing trouble.

9. Can a DIY enthusiast repair OBDII code P090B at home?

Repairing OBDII code P090B may require specialized tools and knowledge of automotive systems. While some basic troubleshooting steps can be done at home, it is recommended to seek the assistance of a professional mechanic for a comprehensive repair.

10. Is OBDII code P090B a common issue in certain vehicle makes or models?

OBDII code P090B can be more common in vehicles with automated manual transmissions that utilize clutch actuators. It is advisable to check for any manufacturer recalls or technical service bulletins related to this code for specific vehicle models.