AutoCodes – Saab – P1902 Saab

P1902 Saab Code - CAN Data Bus Multifunction Control Module 2

Quick Answer

P1902 Saab 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 Saab 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 4,181

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
Tech Notes
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1902 Saab Description

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

What does this mean?

What are the Possible Causes of the DTC P1902 Saab?

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 Saab?

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 does this mean?

Code Tech Notes

Multifunction control module 1 controls: headlamps, interior lamps, instrument illumination, intermittent wiper, door mirror heater, heated rear window

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1902 Saab 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 Saab code?

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

Need Help with the Code?

Get the P1902 Saab code diagnosed by a professional: Find a repair shop in your area

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 P1902 Saab Code

1. What are common symptoms of OBDII code P1902 in a Saab related to the CAN Data Bus Multifunction Control Module 2?

The common symptoms include issues with multiple vehicle functions, such as power windows, door locks, lights, and the car's overall electrical system.

2. What are some possible causes of OBDII code P1902 in a Saab?

Possible causes include a malfunctioning multifunction control module, wiring issues, a faulty CAN data bus, or a problem with the vehicle's electrical system.

3. How can I diagnose the OBDII code P1902 in my Saab?

Diagnosing this code typically involves using a diagnostic scanner to retrieve the specific fault codes, checking the wiring and connections related to the multifunction control module, and testing the different components of the CAN data bus.

4. What are some repair tips for fixing OBDII code P1902 in a Saab?

Repair tips may include checking and repairing any damaged wiring, replacing the multifunction control module if necessary, ensuring all connections are secure, and clearing the fault codes after making repairs.

5. Can I drive my Saab with OBDII code P1902 present?

It is not recommended to drive your Saab with this code present, as it can indicate underlying issues that may affect the vehicle's performance and safety. It's best to address the problem promptly.

6. How much does it typically cost to repair OBDII code P1902 in a Saab?

The cost of repairing this code can vary depending on the exact cause of the issue, parts needed for replacement, and labor costs. It is advisable to consult a professional mechanic for an accurate estimate.

7. Is it possible to reset the OBDII code P1902 in a Saab without repairing the issue?

While you can clear the fault code using a diagnostic scanner, it is essential to address the underlying problem causing the code to prevent further issues with your vehicle's functionality.

8. Are there any recalls or technical service bulletins related to OBDII code P1902 in Saab vehicles?

It's recommended to check with your local Saab dealership or online resources for any recalls or technical service bulletins related to this specific OBDII code for your Saab model.

9. Can a DIY enthusiast without advanced automotive knowledge repair OBDII code P1902 in a Saab?

Depending on the specific cause of the code, some repairs related to OBDII code P1902 may be within reach for a DIY enthusiast with basic automotive knowledge. However, complex electrical issues may require professional assistance.

10. How can I prevent OBDII code P1902 from occurring in my Saab in the future?

Regular maintenance, checking the electrical system, and addressing any warning signs promptly can help prevent OBDII code P1902 and other related issues in your Saab.