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Code P0997

Quick reference

P0997 at a glance

Plain-language meaning
This code means there's a problem with the part of your car that helps it change gears. It's like when a toy car gets stuck and can't move smoothly.
Urgency
Moderate – Address soon to avoid further transmission damage.
Difficulty
Moderate
System
Transmission Issue
Tools mentioned
OBD-II scanner, Multimeter, Basic hand tools

This summary uses the existing diagnostic information shown in full below.

Laymans terms

This code means there's a problem with the part of your car that helps it change gears. It's like when a toy car gets stuck and can't move smoothly.

Explanation

The P0997 code indicates an issue with the performance or range of the control circuit for shift solenoid F in the transmission.

Technical description

The transmission control module (TCM) monitors the electrical signals from the shift solenoids to control gear shifting. If the TCM detects a problem with the signal from shift solenoid F, such as being out of the expected range or not performing as expected, it triggers the P0997 code.

Symptoms

• Check Engine Light is on

• Transmission slipping

• Harsh or delayed shifting

Common Causes

• Faulty shift solenoid F

• Wiring issues in the solenoid circuit

• Malfunctioning transmission control module (TCM)

Glossary

TCM: Transmission Control Module

Solenoid: A coil of wire used as an electromagnet to control the flow of fluid in the transmission

Diagnosis steps

• Use an OBD-II scanner to confirm the code.

• Inspect the wiring and connectors for damage.

• Test the shift solenoid F for proper operation.

Repair procedures

• Replace faulty shift solenoid F.

• Repair or replace damaged wiring/connectors.

• Reprogram or replace the TCM if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$150 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Toyota Camry

• Honda Accord

• Ford F-150

Preventive measures

• Regular transmission fluid checks and changes

• Routine vehicle maintenance

• Avoid aggressive driving

Error code type

Transmission Issue

User experience recommendations

• Avoid driving at high speeds until fixed.

• Schedule a repair appointment promptly.

Warranty information

Transmission issues may be covered under powertrain warranty.

Historical data

This code has been associated with solenoid failures in vehicles with high mileage.

Urgency level

Moderate – Address soon to avoid further transmission damage.

Testing conditions

• Vehicle at operating temperature

• Transmission fluid at correct level

Component location

Shift solenoid F is located inside the transmission, usually accessible by removing the transmission pan.

FAQs

Q: Can I drive with a P0997 code?
A: It's not recommended, as it may cause further damage to the transmission.

Q: How long does it take to fix a P0997 code?
A: Repairs can take a few hours, depending on the issue's complexity.

Optional diagnostic gear

Tools that may help diagnose P0997

THINKCAR ThinkScan Bidirectional diagnostic tool illustration

High-End · Full-system diagnostics

THINKCAR ThinkScan Bidirectional

A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.

Network faults often require full-system access instead of a generic code reader alone.

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Klein Tools MM325 diagnostic tool illustration

Universal · Digital multimeter

Klein Tools MM325

A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.

Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.

View on Amazon
WORKPRO Wiring Repair Kit diagnostic tool illustration

Universal · Wire connectors and repair kit

WORKPRO Wiring Repair Kit

Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.

Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.

View on Amazon

These are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.

Source: ezOBD2 diagnostic database
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