AutoCodes – Buick – P1469 Buick

P1469 Buick Code - EVAP Purge Pump Speed Too Low

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
P1469 Buick indicates EVAP Purge Pump Speed Too Low.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 305
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 18, 2023
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Code P1469 Buick 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 less than 100 RPM for greater than 5 s.
OBDII Code P1469 Buick - EVAP Purge Pump Speed Too Low - AutoCodes.com
P1469 Buick Code - EVAP Purge Pump Speed Too Low

What are the Possible Causes of the DTC P1469 Buick?

  • 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 P1469 Buick?

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 P1469 Buick 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 P1469 Buick code?

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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 P1469 Buick Code

1. What does the OBDII code P1469 mean on a Buick?

Code P1469 indicates that the EVAP purge pump speed is too low, which can impact the vehicle's emissions system.

2. What are the common symptoms of code P1469 in a Buick?

Symptoms may include the check engine light illuminating, poor fuel efficiency, difficulty passing emissions tests, or a faint fuel smell.

3. What causes the EVAP purge pump speed to be too low?

Possible causes include a faulty purge pump, electrical issues such as damaged wiring or connectors, or restrictions in the EVAP system.

4. How can you diagnose code P1469 on a Buick?

Diagnosis typically involves inspecting the EVAP purge pump, checking for wiring or connector issues, and using a scan tool to monitor the pump's operation.

5. Can you drive a Buick with code P1469?

While the vehicle may still be drivable, prolonged operation with this code can affect fuel efficiency and emissions performance.

6. How is code P1469 typically repaired?

Repairs may involve replacing the purge pump, fixing electrical connections, or clearing blockages in the EVAP system.

7. How much does it cost to fix code P1469 on a Buick?

Repair costs can vary but typically range from $100 to $400, depending on the specific issue and labor charges.

8. Can a dirty or clogged EVAP system cause code P1469?

Yes, blockages in the EVAP system can restrict airflow and lead to the purge pump operating at low speeds.

9. Will clearing the P1469 code solve the problem?

Clearing the code without addressing the underlying issue will likely result in the code returning.

10. How can you prevent code P1469 from occurring?

Regular vehicle maintenance, including checking the EVAP system for leaks or damage, can help prevent this code from appearing.

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