AutoCodes – Volvo – P1670 Volvo

P1670 Volvo Code - Immobilizer Communication

Quick Answer

P1670 Volvo indicates Immobilizer Communication. Common causes include Faulty Immobilizer, Immobilizer harness is open or shorted, Immobilizer 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: P1670 Volvo indicates Immobilizer Communication.
Common causes: Common causes include Faulty Immobilizer, Immobilizer harness is open or shorted, Immobilizer 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 9,286

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 08, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1670 Volvo Description

OBDII Code P1670 Volvo - Immobilizer Communication - AutoCodes.com — P1670 Volvo Code - Immobilizer Communication

What does this mean?

What are the Possible Causes of the DTC P1670 Volvo?

Faulty Immobilizer
Immobilizer harness is open or shorted
Immobilizer circuit poor electrical connection

How to Fix the DTC P1670 Volvo?

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 P1670 Volvo 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 P1670 Volvo code?

Need more information on how to fix the P1670 Volvo code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P1670 Volvo Code

1. What are the common symptoms of OBDII code P1670 in a Volvo related to Immobilizer Communication?

- Common symptoms include the engine not starting, the vehicle stalling shortly after starting, or the immobilizer warning light staying on.

2. What are the possible causes of OBDII code P1670 related to Immobilizer Communication in a Volvo?

- Possible causes can include a faulty immobilizer control module, issues with the key fob or key transponder, wiring problems, or a malfunctioning Engine Control Module (ECM).

3. How can I diagnose the OBDII code P1670 related to Immobilizer Communication in my Volvo?

- Diagnosing this code often requires specialized diagnostic equipment to scan for specific fault codes related to the immobilizer system, as well as checking the key fob, key transponder, wiring connections, and immobilizer control module.

4. Can a faulty key fob or key transponder cause OBDII code P1670 in a Volvo?

- Yes, a faulty key fob or key transponder can cause communication issues with the immobilizer system, triggering OBDII code P1670 in a Volvo.

5. How can I repair OBDII code P1670 related to Immobilizer Communication in my Volvo?

- Repair options may include reprogramming or replacing the key fob, reprogramming the key transponder, repairing or replacing wiring connections, or replacing the immobilizer control module.

6. Is it safe to continue driving my Volvo with OBDII code P1670 related to Immobilizer Communication?

- It is not recommended to drive your Volvo with this code present, as it may lead to starting or stalling issues, potentially leaving you stranded.

7. Can a software update fix OBDII code P1670 related to Immobilizer Communication in my Volvo?

- In some cases, a software update provided by the manufacturer may resolve communication issues between the immobilizer system and the Engine Control Module, eliminating the OBDII code P1670.

8. How much does it typically cost to repair OBDII code P1670 related to Immobilizer Communication in a Volvo?

- The cost of repair can vary depending on the specific cause of the issue, but it may range from a few hundred to over a thousand dollars, considering diagnostic fees, parts, and labor.

9. Are there any preventive measures to avoid OBDII code P1670 related to Immobilizer Communication in my Volvo?

- Regular maintenance, such as checking the condition of the key fob, key transponder, and wiring connections, can help prevent issues that may trigger OBDII code P1670 related to Immobilizer Communication.

10. Can a local mechanic or dealership service center help with diagnosing and repairing OBDII code P1670 related to Immobilizer Communication in my Volvo?

- Yes, both local mechanics and dealership service centers equipped with the necessary diagnostic tools and expertise can assist in diagnosing and repairing OBDII code P1670 related to Immobilizer Communication in your Volvo.