AutoCodes – Volvo – P1620 Volvo

P1620 Volvo Code - MIL Requested By Throttle Unit

Quick Answer

The Engine Control Module (ECM) monitors the Electronic Throttle Module for malfunctions. Common causes include Faulty Electronic Throttle Module, Electronic Throttle Module harness is open or shorted, Electronic Throttle 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: P1620 Volvo indicates MIL Requested By Throttle Unit.
Common causes: Common causes include Faulty Electronic Throttle Module, Electronic Throttle Module harness is open or shorted, Electronic Throttle 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 4,143

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 Jul 22, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1620 Volvo Description

The Engine Control Module (ECM) monitors the Electronic Throttle Module for malfunctions. The ECM sets the OBDII code when the Electronic Throttle Module has requested that the warning lamp is lit.

OBDII Code P1620 Volvo - MIL Requested By Throttle Unit - AutoCodes.com — P1620 Volvo Code - MIL Requested By Throttle Unit

What does this mean?

What are the Possible Causes of the DTC P1620 Volvo?

Faulty Electronic Throttle Module
Electronic Throttle Module harness is open or shorted
Electronic Throttle Module circuit poor electrical connection

How to Fix the DTC P1620 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 P1620 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 P1620 Volvo code?

Need more information on how to fix the P1620 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 P1620 Volvo Code

1. What does OBDII code P1620 in a Volvo mean?

The P1620 code indicates that the Malfunction Indicator Lamp (MIL) has been requested to illuminate by the Throttle Unit.

2. What are the common symptoms of OBDII code P1620 in a Volvo?

Common symptoms include the check engine light being illuminated on the dashboard and potential issues with the throttle response.

3. What are the possible causes of OBDII code P1620 in a Volvo?

Possible causes of code P1620 include a faulty throttle unit, wiring issues, or a problem with the electronic control module.

4. How serious is OBDII code P1620 in a Volvo?

While the vehicle may still be driveable with this code, it is important to address it promptly to prevent potential throttle-related issues and ensure proper engine performance.

5. Can I continue driving my Volvo with OBDII code P1620?

It is generally not recommended to drive the vehicle extensively with this code present, as it can lead to throttle-related problems and potentially affect driving safety.

6. How can I diagnose OBDII code P1620 in my Volvo?

Diagnosing this code typically involves using a diagnostic scanner to retrieve the specific error codes, checking the throttle unit and related wiring, and performing a thorough inspection.

7. How can I repair OBDII code P1620 in my Volvo?

Repairing this code often involves replacing the faulty throttle unit, repairing any damaged wiring, or reprogramming the electronic control module to address the issue.

8. Can I reset OBDII code P1620 in my Volvo on my own?

While you can attempt to clear the code with a diagnostic scanner, it is important to address the underlying issue causing the code to prevent it from reoccurring.

9. Is it necessary to visit a mechanic for OBDII code P1620 in my Volvo?

Given the complexity of throttle unit and electronic control module issues, it is recommended to consult a qualified mechanic to properly diagnose and repair this code.

10. How much does it cost to fix OBDII code P1620 in a Volvo?

The cost of fixing this code can vary depending on the specific issue causing it, but it is advisable to budget for potential throttle unit replacement or electronic control module repair.