AutoCodes – Chevrolet – P1850 Chevrolet

P1850 Chevrolet Code - Brake Band Apply Solenoid Circuit

Quick Answer

With the engine running, Transmission Control Module (TCM) High Side driver is closed, the Powertrain Control Module (PCM) detects that the Band Control solenoid was commanded off and the feedback voltage was less than 2.45v, or the Band Control solenoid was commanded off and the feedback voltage was from 2.45 -3.53v, or the Band Control solenoid was commanded on and the feedback voltage was more than 4.02v. Common causes include Faulty Brake Band Apply Solenoid, Brake Band Apply Solenoid harness is open or shorted, Brake Band Apply 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: P1850 Chevrolet indicates Brake Band Apply Solenoid Circuit.
Common causes: Common causes include Faulty Brake Band Apply Solenoid, Brake Band Apply Solenoid harness is open or shorted, Brake Band Apply 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 4,272

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 23, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1850 Chevrolet Description

OBDII Code P1850 Chevrolet - Brake Band Apply Solenoid Circuit - AutoCodes.com — P1850 Chevrolet Code - Brake Band Apply Solenoid Circuit

What does this mean?

What are the Possible Causes of the DTC P1850 Chevrolet?

Faulty Brake Band Apply Solenoid
Brake Band Apply Solenoid harness is open or shorted
Brake Band Apply Solenoid circuit poor electrical connection

How to Fix the DTC P1850 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 P1850 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 P1850 Chevrolet code?

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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.