AutoCodes – Generic – P1687

P1687 Code - No Cluster Bus Message

Quick Answer

Instrument Cluster messages are monitored with the ignition on. Common causes include Faulty Instrument Cluster, Instrument Cluster harness is open or shorted, Instrument Cluster 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: P1687 indicates No Cluster Bus Message.
Common causes: Common causes include Faulty Instrument Cluster, Instrument Cluster harness is open or shorted, Instrument Cluster 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 41,780

How popular is this code, among other codes? Medium

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 23, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1687 Description

Instrument Cluster messages are monitored with the ignition on. The Diagnostic Trouble Code (DTC) will set when the Powertrain Control Module (PCM) has not received an expected cluster status bus message from the Instrument Cluster within the last 20 seconds.

OBDII Code P1687 - No Cluster Bus Message - AutoCodes.com — P1687 Code - No Cluster Bus Message

What does this mean?

What are the Possible Causes of the DTC P1687?

Faulty Instrument Cluster
Instrument Cluster harness is open or shorted
Instrument Cluster circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P1687?

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 P1687 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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Information for Specific Makes

P1687 Acura — Automatic Transmission To Engine Control Module Signal 'B' Input High
P1687 Buick — Fuel Injector Control Module Driver Stuck On
P1687 Cadillac — Fuel Injector Control Module Driver Stuck On
P1687 Chevrolet — Fuel Injector Control Module Driver Stuck On
P1687 Chrysler — No Cluster Bus Message
P1687 Dodge — No Cluster Bus Message
P1687 GMC — Fuel Injector Control Module Driver Stuck On
P1687 Honda — Automatic Transmission To Engine Control Module Signal 'B' Input High
P1687 Isuzu — Automatic Transmission To Engine Control Module Signal 'B' Input High
P1687 Jeep — No Cluster Bus Message

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.