AutoCodes – Cadillac – P1845 Cadillac

P1845 Cadillac 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 Cadillac 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 6,504

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Sep 22, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
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Code P1845 Cadillac Description

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

What does this mean?

What are the Possible Causes of the DTC P1845 Cadillac?

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 Cadillac?

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 Cadillac 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.

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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.