AutoCodes – Chevrolet – P1847 Chevrolet

P1847 Chevrolet Code - 2-3 Shift Solenoid Circuit High Input Voltage

Quick Answer

With the engine runtime over 5 seconds, system voltage from 8-18v, Fuel Cutoff inactive, 2-3 Shift Solenoid commanded on by the Powertrain Control Module (PCM), the PCM detected a continuous short to power on the 2-3 Shift Solenoid feedback circuit for 4.3 seconds. Common causes include Faulty 2-3 Shift Solenoid, 2-3 Shift Solenoid harness is open or shorted, 2-3 Shift Solenoid 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: P1847 Chevrolet indicates 2-3 Shift Solenoid Circuit High Input Voltage.
Common causes: Common causes include Faulty 2-3 Shift Solenoid, 2-3 Shift Solenoid harness is open or shorted, 2-3 Shift Solenoid 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,661

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 Sep 22, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1847 Chevrolet Description

OBDII Code P1847 Chevrolet - 2-3 Shift Solenoid Circuit High Input Voltage - AutoCodes.com — P1847 Chevrolet Code - 2-3 Shift Solenoid Circuit High Input Voltage

What does this mean?

What are the Possible Causes of the DTC P1847 Chevrolet?

Faulty 2-3 Shift Solenoid
2-3 Shift Solenoid harness is open or shorted
2-3 Shift Solenoid circuit poor electrical connection

How to Fix the DTC P1847 Chevrolet?

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 P1847 Chevrolet 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 P1847 Chevrolet code?

Need more information on how to fix the P1847 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1847 Chevrolet code diagnosed by a professional: Find a repair shop in your area

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 P1847 Chevrolet Code

What does the OBDII code P1847 mean on a Chevrolet?

The P1847 code indicates a "2-3 Shift Solenoid Circuit High Input Voltage," meaning the transmission control module (TCM) has detected an abnormally high voltage in the 2-3 shift solenoid circuit.

What are the common symptoms of code P1847 in a Chevrolet?

Symptoms may include harsh or delayed shifting, the transmission being stuck in one gear, reduced fuel efficiency, and the illumination of the check engine light.

What causes the P1847 code to appear on a Chevrolet?

Common causes include a faulty 2-3 shift solenoid, damaged or corroded wiring or connectors, a short to voltage in the electrical circuit, or, less commonly, a malfunctioning TCM.

Can I continue driving with the P1847 code active?

It is not recommended to drive for an extended period with this code, as transmission performance may be compromised, potentially leading to further damage.

How do you diagnose the P1847 code on a Chevrolet?

Diagnosis involves using a scan tool to confirm the code, visually inspecting the solenoid wiring and connectors for damage, testing the solenoid's resistance with a multimeter, and checking for voltage or shorts in the circuit.

How do you fix the P1847 code on a Chevrolet?

Repairs may include replacing the 2-3 shift solenoid, repairing or replacing damaged wiring or connectors, clearing any shorts, or reprogramming or replacing the TCM if necessary.

How much does it cost to repair the P1847 code?

Repair costs vary but typically range from $150 to $400, depending on whether the solenoid, wiring, or TCM needs replacement.

Can a failing 2-3 shift solenoid cause transmission damage?

Yes, a failing solenoid can lead to improper shifting, which may cause increased wear on the transmission over time.

Is the P1847 code specific to Chevrolet vehicles?

No, the P1847 code can appear on other vehicles, but the exact diagnostic and repair procedures may vary by make and model.

Can a weak battery trigger the P1847 code?

While uncommon, low battery voltage or charging system issues can sometimes contribute to electrical problems, including high or erratic voltage readings in solenoid circuits.