AutoCodes – Generic – P1872

P1872 Code - Transmission Mechanical 4-Wheel Drive Axle Lock Lamp Circuit Failure

Quick Answer

P1872 indicates Transmission Mechanical 4-Wheel Drive Axle Lock Lamp Circuit Failure. Common causes for P1872 include wiring or connector problems, a faulty related sensor or actuator, and control module or calibration issues. 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: P1872 indicates Transmission Mechanical 4-Wheel Drive Axle Lock Lamp Circuit Failure.
Common causes: Common causes for P1872 include wiring or connector problems, a faulty related sensor or actuator, and control module or calibration issues.
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 10,948

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 25, 2019

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How To Fix
Cost to Diagnose
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Code P1872 Description

OBDII Code P1872 - Transmission Mechanical 4-Wheel Drive Axle Lock Lamp Circuit Failure - AutoCodes.com — P1872 Code - Transmission Mechanical 4-Wheel Drive Axle Lock Lamp Circuit Failure

How to Fix the DTC P1872?

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 P1872 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.