AutoCodes – Generic – P1902

P1902 Code - CAN Data Bus Multifunction Control Module 2

Quick Answer

P1902 indicates CAN Data Bus Multifunction Control Module 2. Common causes include Faulty Multifunction Control Module, Multifunction Control Module harness is open or shorted, Multifunction Control Module 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: P1902 indicates CAN Data Bus Multifunction Control Module 2.
Common causes: Common causes include Faulty Multifunction Control Module, Multifunction Control Module harness is open or shorted, Multifunction Control Module 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 21,976

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 27, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1902 Description

OBDII Code P1902 - CAN Data Bus Multifunction Control Module 2 - AutoCodes.com — P1902 Code - CAN Data Bus Multifunction Control Module 2

What does this mean?

What are the Possible Causes of the DTC P1902?

Faulty Multifunction Control Module
Multifunction Control Module harness is open or shorted
Multifunction Control Module circuit poor electrical connection

How to Fix the DTC P1902?

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 P1902 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 P1902 code?

Need more information on how to fix the P1902 code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific Makes

P1902 Audi — Engine Coolant Blower Motor Run-On Relay Short To Ground
P1902 Ford — Kickdown Solenoid Relay Control Circuit
P1902 Saab — CAN Data Bus Multifunction Control Module 2
P1902 Volkswagen — Engine Coolant Blower Motor Run-On Relay Short To Ground

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.