AutoCodes – Generic – P0904

P0904 Code - Gate Select Position Circuit

Quick Answer

Manual transmissions have a sensor on the shift lever that tells the Powertrain Control Module (PCM) what gear the transmission is in. Common causes include Faulty Gate Select Position Sensor, Gate Select Position Sensor harness is open or shorted, Gate Select Position Sensor 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: P0904 indicates Gate Select Position Circuit.
Common causes: Common causes include Faulty Gate Select Position Sensor, Gate Select Position Sensor harness is open or shorted, Gate Select Position Sensor 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 16,771

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 Jul 04, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P0904 Description

Manual transmissions have a sensor on the shift lever that tells the Powertrain Control Module (PCM) what gear the transmission is in. This sensor is crucial for adjusting engine parameters for optimal performance. The code is stored if the Shift Lever Position Sensor sends an implausible signal. Typically built into the Shift Lever Assembly, this sensor ensures smooth vehicle operation. Malfunctions can cause erratic shifting, poor performance, and trigger the check engine light, requiring immediate diagnosis and repair.

OBDII Code P0904 - Gate Select Position Circuit - AutoCodes.com — P0904 Code - Gate Select Position Circuit

What does this mean?

What are the Possible Causes of the DTC P0904?

Faulty Gate Select Position Sensor
Gate Select Position Sensor harness is open or shorted
Gate Select Position Sensor circuit poor electrical connection
Faulty Shift Lever Assembly

How to Fix the DTC P0904?

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 P0904 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 P0904 code?

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Information for Specific Makes

P0904 Dodge — Gate Select Position Circuit

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.