AutoCodes – Audi – P1908 Audi

P1908 Audi Code - Data Bus ECM 1/2 Software Version Monitoring

Quick Answer

P1908 Audi indicates Data Bus ECM 1/2 Software Version Monitoring. Common causes include Engine Control Module (ECM) program, Faulty Engine Control Module (ECM), Engine Control Module (ECM) harness is open or shorted. 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: P1908 Audi indicates Data Bus ECM 1/2 Software Version Monitoring.
Common causes: Common causes include Engine Control Module (ECM) program, Faulty Engine Control Module (ECM), Engine Control Module (ECM) harness is open or shorted.
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 3,216

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Sep 27, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1908 Audi Description

OBDII Code P1908 Audi - Data Bus ECM 1/2 Software Version Monitoring - AutoCodes.com — P1908 Audi Code - Data Bus ECM 1/2 Software Version Monitoring

What does this mean?

What are the Possible Causes of the DTC P1908 Audi?

Engine Control Module (ECM) program
Faulty Engine Control Module (ECM)
Engine Control Module (ECM) harness is open or shorted
Engine Control Module (ECM) circuit poor electrical connection

How to Fix the DTC P1908 Audi?

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 P1908 Audi 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.

Frequently Asked Questions about P1908 Audi Code

1. What does the OBDII code P1908 mean on an Audi?

The P1908 code refers to "Data Bus ECM 1/2 Software Version Monitoring," indicating a communication or compatibility issue between engine control modules.

2. What are the common symptoms of P1908 on an Audi?

Common symptoms include a check engine light, poor engine performance, intermittent communication issues, or failure of certain electronic systems.

3. What causes the P1908 code to appear on an Audi?

The code can be triggered by outdated or incompatible software on the ECMs, corrupted data, a faulty control module, or wiring and connection issues in the data bus.

4. Can a loose connection cause the P1908 code on an Audi?

Yes, a loose or damaged connection in the CAN bus wiring can interrupt communication and trigger the P1908 code.

5. How do you diagnose the P1908 code on an Audi?

Diagnosis involves using a scan tool to check the software version of the ECMs, inspecting CAN bus connections, and testing for proper communication between modules.

6. Can the P1908 code cause drivability issues?

Yes, depending on the severity, it can lead to reduced engine performance, starting problems, or failure of related systems.

7. How can the P1908 code be fixed on an Audi?

Fixes may include updating ECM software to the latest version, repairing or replacing damaged wiring, or replacing a faulty ECM if necessary.

8. Is the P1908 code specific to certain Audi models?

While it is more common in certain Audi models with advanced CAN bus systems, it can appear on any Audi using the affected ECM configuration.

9. Can a software update resolve the P1908 code on an Audi?

Yes, in many cases, updating the ECM software to the latest version can resolve compatibility or communication issues causing the code.

10. Is the P1908 code critical to address immediately?

While it may not immediately affect drivability, ignoring the code can lead to further communication failures and potential system malfunctions, so it should be addressed promptly.