AutoCodes – Acura – C1871 Acura

C1871 Acura Code - Automatic Transmission Related Malfunction

Quick Answer

The Engine Control Module (ECM) monitors the Automatic Transmission. Common causes include Faulty Automatic Transmission Control Module (TCM), Transmission Control Module (TCM) harness is open or shorted, Transmission Control Module (TCM) 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: C1871 Acura indicates Automatic Transmission Related Malfunction.
Common causes: Common causes include Faulty Automatic Transmission Control Module (TCM), Transmission Control Module (TCM) harness is open or shorted, Transmission Control Module (TCM) 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 955

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 Dec 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1871 Acura Description

The Engine Control Module (ECM) monitors the Automatic Transmission. The ECM sets the OBDII code when the Automatic Transmission is not to factory specifications.

OBDII Code C1871 Acura - Automatic Transmission Related Malfunction - AutoCodes.com — C1871 Acura Code - Automatic Transmission Related Malfunction

What does this mean?

What are the Possible Causes of the DTC C1871 Acura?

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

How to Fix the DTC C1871 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 C1871 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 C1871 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.

Frequently Asked Questions about C1871 Acura Code

1. What does OBDII code C1871 in an Acura indicate?

The OBDII code C1871 in an Acura indicates an Automatic Transmission Related Malfunction.

2. What are common symptoms of OBDII code C1871 in an Acura?

Common symptoms of OBDII code C1871 in an Acura may include transmission slipping, rough shifting, or the transmission going into limp mode.

3. What are possible causes of OBDII code C1871 in an Acura?

Possible causes of OBDII code C1871 in an Acura include faulty transmission sensors, damaged wiring harness, or a malfunctioning transmission control module.

4. How can I diagnose OBDII code C1871 in my Acura at home?

You can diagnose OBDII code C1871 in your Acura using an OBDII scanner to retrieve the code and then inspecting the transmission sensors and wiring for any visible issues.

5. Can I continue driving my Acura with OBDII code C1871?

It is not recommended to continue driving your Acura with OBDII code C1871 as it can lead to further damage to the transmission if left unresolved.

6. How can I repair OBDII code C1871 in my Acura?

To repair OBDII code C1871 in your Acura, you may need to replace faulty transmission sensors, repair damaged wiring, or reprogram the transmission control module.

7. Will resetting the OBDII code C1871 in my Acura make it go away permanently?

Resetting the OBDII code C1871 in your Acura may temporarily clear the code, but if the underlying issue is not fixed, the code is likely to reappear.

8. Is it safe to ignore OBDII code C1871 in my Acura?

Ignoring OBDII code C1871 in your Acura is not recommended as it can lead to transmission issues and potentially unsafe driving conditions.

9. How much does it cost to fix OBDII code C1871 in an Acura?

The cost to fix OBDII code C1871 in an Acura can vary depending on the specific cause of the issue, but it may range from a few hundred to a few thousand dollars.

10. Can a mechanic help me diagnose and repair OBDII code C1871 in my Acura?

Yes, a qualified mechanic can help diagnose and repair OBDII code C1871 in your Acura by performing a thorough inspection and carrying out the necessary repairs.