AutoCodes – Cadillac – P1587 Cadillac

P1587 Cadillac Code - Cruise Control Clutch Control Circuit Low

Quick Answer

Engine running with engine speed more than 1000 rpm (wheel speed indicates more than 20 mph in order to enable the test, and the test will disable when wheel speed is less than 5 mph), then the Powertrain Control Module (PCM) detects that the vehicle speed decreased by 1 mph in 0.5 seconds without the PCM detecting a Brake switch transition, all conditions present for 10 Accel/Decel cycles. Common causes include Faulty Cruise Control Brake Switch, Cruise Control Brake Switch harness is open or shorted, Cruise Control Brake Switch 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: P1587 Cadillac indicates Cruise Control Clutch Control Circuit Low.
Common causes: Common causes include Faulty Cruise Control Brake Switch, Cruise Control Brake Switch harness is open or shorted, Cruise Control Brake Switch 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 2,719

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 May 20, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1587 Cadillac Description

OBDII Code P1587 Cadillac - Cruise Control Clutch Control Circuit Low - AutoCodes.com — P1587 Cadillac Code - Cruise Control Clutch Control Circuit Low

What does this mean?

What are the Possible Causes of the DTC P1587 Cadillac?

Faulty Cruise Control Brake Switch
Cruise Control Brake Switch harness is open or shorted
Cruise Control Brake Switch circuit poor electrical connection

How to Fix the DTC P1587 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 P1587 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.