AutoCodes – Acura – P1671 Acura

P1671 Acura Code - Automatic Transmission To Engine Control Module No Signal

Quick Answer

P1671 Acura indicates Automatic Transmission To Engine Control Module No Signal. Common causes include Faulty Automatic Transmission (AT), Faulty Engine Control Module (ECM), Engine Control Module (ECM) harness is open or shorted. 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: P1671 Acura indicates Automatic Transmission To Engine Control Module No Signal.
Common causes: Common causes include Faulty Automatic Transmission (AT), Faulty Engine Control Module (ECM), Engine Control Module (ECM) harness is open or shorted.
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 3,810

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 08, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
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Code P1671 Acura Description

OBDII Code P1671 Acura - Automatic Transmission To Engine Control Module No Signal - AutoCodes.com — P1671 Acura Code - Automatic Transmission To Engine Control Module No Signal

What does this mean?

What are the Possible Causes of the DTC P1671 Acura?

Faulty Automatic Transmission (AT)
Faulty Engine Control Module (ECM)
Engine Control Module (ECM) harness is open or shorted
Engine Control Module (ECM) circuit poor electrical connection

How to Fix the DTC P1671 Acura?

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 P1671 Acura 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 P1671 Acura 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.