AutoCodes – Generic – P1468

P1468 Code - EVAP Purge Pump Overspeed

Quick Answer

Purge capacity is being reduced by technologies that improve fuel economy. Common causes include Faulty Evaporative Emission Purge Pump, Evaporative Emission Purge Pump harness is open or shorted, Evaporative Emission Purge Pump 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: P1468 indicates EVAP Purge Pump Overspeed.
Common causes: Common causes include Faulty Evaporative Emission Purge Pump, Evaporative Emission Purge Pump harness is open or shorted, Evaporative Emission Purge Pump 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 13,539

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 Apr 18, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1468 Description

Purge capacity is being reduced by technologies that improve fuel economy. The Evaporative Emission Purge Pump is used to purge stored vapors from the Evaporative Emission Canister and is required to increase the purge volumes to meet LEV 3 Evaporative Emission requirements. The Evaporative Emission Purge Pump has an integral pressure sensor for controlling purge vapors from the canister. The Engine Control Module (ECM) monitors the Evaporative Emission Purge Pump, and the Diagnostic Trouble Code (DTC) will be set when the EVAP Purge Pump Speed is greater than 240 RPM when commanded off for greater than 5 s.

OBDII Code P1468 - EVAP Purge Pump Overspeed - AutoCodes.com — P1468 Code - EVAP Purge Pump Overspeed

What does this mean?

What are the Possible Causes of the DTC P1468?

Faulty Evaporative Emission Purge Pump
Evaporative Emission Purge Pump harness is open or shorted
Evaporative Emission Purge Pump circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P1468?

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 P1468 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 P1468 code?

Need more information on how to fix the P1468 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1468 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1468 Audi — EVAP Canister Purge Solenoid Valve Short Circuit to Ground
P1468 BMW — Heated Catalyst Battery Disconnecting Switch Plausibility
P1468 Buick — EVAP Purge Pump Overspeed
P1468 Cadillac — EVAP Purge Pump Overspeed
P1468 Chevrolet — EVAP Purge Pump Overspeed
P1468 GMC — EVAP Purge Pump Overspeed
P1468 MINI — Heated Catalyst Battery Disconnecting Switch Plausibility
P1468 Volkswagen — EVAP Canister Purge Solenoid Valve Short Circuit to Ground

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 P1468 Code

1. What does the OBDII code P1468 mean?

Code P1468 indicates that the Evaporative Emission (EVAP) purge pump is operating at an excessive speed, which may signal a malfunction in the EVAP system.

2. What are the symptoms of code P1468?

Common symptoms include the check engine light turning on, increased fuel odor, potential difficulty starting the vehicle, and possibly reduced fuel efficiency.

3. What causes the EVAP purge pump to overspeed?

Causes can include a faulty EVAP purge pump, vacuum leaks, a clogged or damaged EVAP hose, or issues with the system's wiring or connectors.

4. Can I drive my car with code P1468 present?

While the vehicle may still be drivable, ignoring this code can lead to increased emissions, fuel inefficiency, and potential damage to other components in the EVAP system.

5. How can I diagnose code P1468?

Diagnosis typically includes inspecting the EVAP purge pump, checking for vacuum leaks, testing wiring and connectors, and using a scan tool to monitor EVAP system performance.

6. What repairs are needed to fix code P1468?

Repairs may involve replacing the purge pump, repairing vacuum leaks, cleaning or replacing clogged hoses, or fixing damaged wiring.

7. How much does it cost to fix code P1468?

Costs can vary, with a purge pump replacement ranging from $200 to $400, while minor repairs like fixing vacuum leaks may be less expensive.

8. Can a faulty gas cap cause code P1468?

A loose or damaged gas cap is unlikely to cause this specific code but can lead to other EVAP-related issues. It’s worth checking during diagnosis.

9. Does code P1468 affect vehicle performance?

While it may not directly impact performance, unresolved EVAP issues can lead to reduced fuel efficiency and potential long-term damage.

10. How can I prevent code P1468 from occurring?

Regular maintenance of the EVAP system, ensuring hoses and connections are intact, and promptly addressing any check engine light alerts can help prevent this code.