AutoCodes – Generic – P0998

P0998 Code - Shift Solenoid 'F' Control Circuit Low

Quick Answer

The Transmission Control Module (TCM) monitors the Shift Solenoid signal. Common causes include Faulty Shift Solenoid 'F', Shift Solenoid 'F' harness is open or shorted, Shift Solenoid 'F' 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: P0998 indicates Shift Solenoid 'F' Control Circuit Low.
Common causes: Common causes include Faulty Shift Solenoid 'F', Shift Solenoid 'F' harness is open or shorted, Shift Solenoid 'F' 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 9,647

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 11, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0998 Description

The Transmission Control Module (TCM) monitors the Shift Solenoid signal. The TCM sets the OBDII code when the Shift Solenoid is not to factory specifications.

OBDII Code P0998 - Shift Solenoid 'F' Control Circuit Low - AutoCodes.com — P0998 Code - Shift Solenoid 'F' Control Circuit Low

What does this mean?

What are the Possible Causes of the DTC P0998?

Faulty Shift Solenoid 'F'
Shift Solenoid 'F' harness is open or shorted
Shift Solenoid 'F' circuit poor electrical connection

How to Fix the DTC P0998?

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 P0998 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 P0998 code?

Need more information on how to fix the P0998 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0998 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P0998 Dodge — Shift Solenoid 'F' Control Circuit Low

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 P0998 Code

1. What are the common symptoms of OBDII code P0998 (Shift Solenoid 'F' Control Circuit Low)?

- Common symptoms include harsh shifting, transmission slipping, erratic shifting patterns, and the transmission not shifting at all.

2. What are the possible causes of OBDII code P0998?

- The code P0998 can be caused by a faulty shift solenoid 'F', a malfunctioning transmission control module (TCM), damaged wiring or connectors in the shift solenoid circuit, or low transmission fluid levels.

3. How can I diagnose the root cause of OBDII code P0998?

- To diagnose the cause of P0998, you can perform a visual inspection of the shift solenoid 'F', test the solenoid's resistance, check for damaged wiring or connectors, and scan the TCM for any related error codes.

4. Can I still drive my vehicle with OBDII code P0998 present?

- It is not recommended to drive the vehicle with code P0998 as it can lead to further damage to the transmission. It's best to have the issue diagnosed and repaired before driving the vehicle again.

5. How can I repair OBDII code P0998 (Shift Solenoid 'F' Control Circuit Low)?

- Repairing code P0998 involves replacing the faulty shift solenoid 'F', repairing any damaged wiring or connectors, ensuring proper transmission fluid levels, and resetting the trouble code using an OBDII scanner.

6. Will resetting the trouble code make OBDII code P0998 go away permanently?

- Resetting the trouble code may temporarily clear the warning light, but if the underlying issue causing P0998 is not fixed, the code is likely to reappear. It's important to diagnose and repair the root cause of the code.

7. How much does it typically cost to repair OBDII code P0998?

- The cost of repairing code P0998 can vary depending on the exact cause of the issue, the labor rates in your area, and the type of vehicle you have. On average, the repair cost can range from $200 to $600.

8. Can OBDII code P0998 be triggered by other transmission problems?

- Yes, OBDII code P0998 can be triggered by other transmission issues such as low fluid levels, a faulty TCM, or problems with other shift solenoids. It's important to diagnose the specific cause of the code.

9. Are there any DIY tips for troubleshooting OBDII code P0998?

- DIY troubleshooting tips for code P0998 include checking the transmission fluid level, inspecting the wiring and connectors around the shift solenoid 'F', and using an OBDII scanner to reset the trouble code.

10. How long does it typically take to repair OBDII code P0998?

- The repair time for code P0998 can vary depending on the exact cause of the issue, the availability of parts, and the expertise of the mechanic. On average, the repair can take anywhere from 1 to 3 hours.