AutoCodes – Generic – P1845

P1845 Code - 2-3 Shift Solenoid Circuit Low Input Voltage

Quick Answer

With the engine runtime over 5 seconds, system voltage from 8-1 8v, Fuel Cutoff inactive, the Powertrain Control Module (PCM) detects an open circuit or a short to ground 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: P1845 indicates 2-3 Shift Solenoid Circuit Low 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.

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Code Popularity 28,069

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
Comments
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Code P1845 Description

OBDII Code P1845 - 2-3 Shift Solenoid Circuit Low Input Voltage - AutoCodes.com — P1845 Code - 2-3 Shift Solenoid Circuit Low Input Voltage

What does this mean?

What are the Possible Causes of the DTC P1845?

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 P1845?

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 P1845 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 P1845 code?

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Need Help with the Code?

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Information for Specific Makes

P1845 Buick — 2-3 Shift Solenoid Circuit Low Input Voltage
P1845 Cadillac — 2-3 Shift Solenoid Circuit Low Input Voltage
P1845 Chevrolet — 2-3 Shift Solenoid Circuit Low Input Voltage
P1845 GMC — 2-3 Shift Solenoid Circuit Low Input Voltage
P1845 Infiniti — Automatic Transmission Fluid Pressure Switch 5
P1845 Nissan — Automatic Transmission Fluid Pressure Switch 5
P1845 Pontiac — 2-3 Shift Solenoid Circuit Low Input Voltage
P1845 Saturn — 2-3 Shift Solenoid Circuit Low Input Voltage

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.