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Code P0920

Quick reference

P0920 at a glance

Plain-language meaning
This code means there's a problem with the car's system that helps it change gears to move forward. It's like when a toy car's remote control isn't working right to make it go forward.
Urgency
High – This issue can prevent the vehicle from moving forward, making it unsafe to drive.
Difficulty
Moderate
System
Transmission Control 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 car's system that helps it change gears to move forward. It's like when a toy car's remote control isn't working right to make it go forward.

Explanation

The P0920 code indicates an issue with the electrical circuit responsible for controlling the gear shift actuator that moves the transmission into forward gears.

Technical description

The P0920 code is triggered when the Powertrain Control Module (PCM) detects an open circuit or malfunction in the gear shift forward actuator circuit. This actuator is responsible for engaging the forward gears in the transmission, and an open circuit can prevent the vehicle from shifting properly.

Symptoms

• Vehicle unable to shift into forward gears

• Check Engine Light illuminated

• Transmission stuck in neutral or reverse

Common Causes

• Faulty gear shift actuator

• Damaged or corroded wiring or connectors

• Blown fuse related to the actuator circuit

Glossary

PCM: Powertrain Control Module

Actuator: A device that causes a mechanical system to move or operate

Diagnosis steps

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

• Inspect the wiring and connectors for damage or corrosion.

• Test the gear shift actuator for proper operation.

Repair procedures

• Replace or repair damaged wiring or connectors.

• Replace the faulty gear shift actuator.

• Replace any blown fuses related to the actuator circuit.

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$150 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Ford F-150

• Chevrolet Silverado

• Toyota Camry

Preventive measures

• Regularly inspect and maintain the transmission system.

• Keep electrical connections clean and free of corrosion.

• Avoid harsh driving conditions that can stress the transmission.

Error code type

Transmission Control Issue

User experience recommendations

• Avoid driving the vehicle until the issue is resolved.

• Consult a professional mechanic for an accurate diagnosis.

Warranty information

Check vehicle warranty for coverage on transmission components.

Historical data

The P0920 code has been associated with vehicles experiencing shifting problems due to electrical issues in the transmission control system.

Urgency level

High – This issue can prevent the vehicle from moving forward, making it unsafe to drive.

Testing conditions

• Vehicle in park or neutral

• Engine running

Component location

The gear shift actuator is typically located on or near the transmission housing.

FAQs

Q: Can I drive my car with a P0920 code?
A: It's not recommended as the vehicle may not shift into forward gears, making it unsafe.

Q: How can I prevent a P0920 code?
A: Regular maintenance and inspection of the transmission system can help prevent issues.

Optional diagnostic gear

Tools that may help diagnose P0920

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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