AutoCodes – Generic – P2408

P2408 Code - Fuel Cap Sensor/Switch Circuit

Quick Answer

The Engine Control Module (ECM) monitors the Fuel Cap Sensor/Switch. Common causes include Faulty Fuel Cap Sensor/Switch, Fuel Cap Sensor/Switch harness is open or shorted, Fuel Cap Sensor/Switch 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: P2408 indicates Fuel Cap Sensor/Switch Circuit.
Common causes: Common causes include Faulty Fuel Cap Sensor/Switch, Fuel Cap Sensor/Switch harness is open or shorted, Fuel Cap Sensor/Switch 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 19,356

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
Add Comment

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

Code P2408 Description

The Engine Control Module (ECM) monitors the Fuel Cap Sensor/Switch. The OBDII code is set when the Fuel Cap Sensor/Switch circuit is out of factory specifications.

OBDII Code P2408 - Fuel Cap Sensor/Switch Circuit - AutoCodes.com — P2408 Code - Fuel Cap Sensor/Switch Circuit

What does this mean?

What are the Possible Causes of the DTC P2408?

Faulty Fuel Cap Sensor/Switch
Fuel Cap Sensor/Switch harness is open or shorted
Fuel Cap Sensor/Switch circuit poor electrical connection

How to Fix the DTC P2408?

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 P2408 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 P2408 code?

Need more information on how to fix the P2408 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2408 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P2408 Dodge — Fuel Cap Sensor/Switch Circuit

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.