AutoCodes – Saab – P1901 Saab

P1901 Saab Code - CAN Data Bus Multifunction Control Module 1

Quick Answer

P1901 Saab indicates CAN Data Bus Multifunction Control Module 1. 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: P1901 Saab indicates CAN Data Bus Multifunction Control Module 1.
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 6,251

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 P1901 Saab Description

OBDII Code P1901 Saab - CAN Data Bus Multifunction Control Module 1 - AutoCodes.com — P1901 Saab Code - CAN Data Bus Multifunction Control Module 1

What does this mean?

What are the Possible Causes of the DTC P1901 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 P1901 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 P1901 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 P1901 Saab code?

Need more information on how to fix the P1901 Saab code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1901 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 P1901 Saab Code

1. What are the common symptoms of OBDII code P1901 in a Saab related to the CAN Data Bus Multifunction Control Module 1?

- Common symptoms include issues with communication between control modules, dashboard warning lights illuminated, and potential loss of functionality of various vehicle systems.

2. What are the possible causes of OBDII code P1901 in a Saab?

- Possible causes can include a faulty multifunction control module, wiring issues, poor electrical connections, or a malfunctioning CAN data bus.

3. How can I diagnose OBDII code P1901 in my Saab?

- Diagnosis typically involves using a diagnostic scanner to retrieve the specific fault code, checking the wiring and connections related to the multifunction control module, and performing tests to identify any underlying issues.

4. Can I continue to drive my Saab with OBDII code P1901 present?

- It is not recommended to continue driving the vehicle with this fault code present, as it can lead to further damage and potential safety hazards due to the compromised communication between control modules.

5. How can I repair OBDII code P1901 in my Saab?

- Repair options may include replacing the multifunction control module, repairing any damaged wiring or connections, ensuring proper electrical grounding, and clearing the fault code with a diagnostic scanner.

6. Are there any DIY tips for addressing OBDII code P1901 in a Saab?

- While some basic checks like inspecting wiring connections can be done DIY, it is recommended to seek professional help for proper diagnosis and repair of complex electrical issues related to this fault code.

7. Will resetting the OBDII system clear the P1901 fault code in my Saab?

- Resetting the system may temporarily clear the fault code, but if the underlying issue causing OBDII code P1901 is not addressed, the code is likely to reappear once the problem is detected again.

8. Can a software update fix OBDII code P1901 in a Saab?

- In some cases, a software update from the manufacturer may address communication issues related to the multifunction control module and resolve the OBDII code P1901 without the need for physical repairs.

9. How much does it typically cost to repair OBDII code P1901 in a Saab at a dealership or repair shop?

- Repair costs can vary depending on the specific cause of the fault code, but it is advisable to budget for diagnostic fees, potential parts replacement, and labor costs which can range from a few hundred to over a thousand dollars.

10. Are there any recalls or technical service bulletins related to OBDII code P1901 in Saab vehicles?

- It's recommended to check with a Saab dealership or visit the manufacturer's website to inquire about any recalls or technical service bulletins related to OBDII code P1901 and potential remedies provided by the manufacturer.