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Code P0893

Quick reference

P0893 at a glance

Plain-language meaning
This means the car's brain thinks two gears are trying to work at the same time, which is like trying to wear two pairs of shoes at once. It confuses the car.
Urgency
High – Continuing to drive with this issue can cause severe transmission damage.
Difficulty
Difficult
System
Transmission Performance
Tools mentioned
OBD-II scanner, Multimeter, Transmission fluid pressure gauge

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

Laymans terms

This means the car's brain thinks two gears are trying to work at the same time, which is like trying to wear two pairs of shoes at once. It confuses the car.

Explanation

The transmission control module (TCM) detects that multiple gears are engaged simultaneously, which is not supposed to happen.

Technical description

P0893 is an OBD-II trouble code indicating that the transmission control module has detected that more than one gear is engaged at the same time. This can occur due to a malfunction in the transmission control system, such as a solenoid failure, wiring issues, or internal transmission problems.

Symptoms

• Transmission slipping

• Harsh shifting

• Check Engine Light illuminated

Common Causes

• Faulty transmission solenoid

• Wiring issues or short circuits

• Internal transmission mechanical failure

Glossary

Transmission Solenoid: An electromechanical device that controls the flow of transmission fluid.

Transmission Control Module (TCM): The computer that controls the transmission's operation.

Diagnosis steps

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

• Inspect transmission fluid level and condition.

• Check wiring and connections to the transmission control module.

Repair procedures

• Replace faulty transmission solenoid.

• Repair or replace damaged wiring.

• Rebuild or replace the transmission if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Transmission fluid pressure gauge

Estimated repair cost

$500 - $2500

Difficulty level

Difficult

Commonly affected vehicles

• Ford F-150

• Chevrolet Silverado

• Toyota Camry

Preventive measures

• Regular transmission fluid changes

• Routine transmission inspections

• Avoid aggressive driving habits

Error code type

Transmission Performance

User experience recommendations

• Avoid driving the vehicle until repaired.

• Consult a professional mechanic for diagnosis.

Warranty information

Transmission repairs may be covered under powertrain warranty if the vehicle is still within the warranty period.

Historical data

P0893 has been reported in vehicles with high mileage or those that have not been maintained regularly.

Urgency level

High – Continuing to drive with this issue can cause severe transmission damage.

Testing conditions

• Vehicle must be in drive mode.

• Transmission fluid at operating temperature.

Component location

The transmission control module is usually located near the transmission or under the hood.

FAQs

Q: Can I drive with a P0893 code?
A: It's not recommended as it can cause further damage to the transmission.

Q: What happens if I ignore the P0893 code?
A: Ignoring the code can lead to severe transmission damage and costly repairs.

Optional diagnostic gear

Tools that may help diagnose P0893

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.

View on Amazon
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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