Engine-CodesAcura – P1459 Acura

P1459 Acura Code - EVAP Emission Purge Flow Switch Malfunction

Quick Answer

The P1459 Acura code indicates a malfunction in the EVAP (Evaporative Emission Control System) emission purge flow switch. Common causes include Faulty EVAP emission purge flow switch, Leaking or damaged EVAP system hoses, Clogged or blocked charcoal canister. 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
P1459 Acura indicates EVAP Emission Purge Flow Switch Malfunction.
Common causes
Common causes include Faulty EVAP emission purge flow switch, Leaking or damaged EVAP system hoses, Clogged or blocked charcoal canister.
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.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1459 Acura Description

The P1459 Acura code indicates a malfunction in the EVAP (Evaporative Emission Control System) emission purge flow switch. The EVAP system is designed to prevent fuel vapors from escaping into the atmosphere by collecting and storing them in a charcoal canister until they can be burned in the engine. The purge flow switch controls the flow of vapors from the charcoal canister to the engine for combustion.

OBDII Code P1459 Acura - EVAP Emission Purge Flow Switch Malfunction
P1459 Acura Code - EVAP Emission Purge Flow Switch Malfunction

Common Causes of P1459 Acura

  1. Faulty EVAP emission purge flow switch
  2. Leaking or damaged EVAP system hoses
  3. Clogged or blocked charcoal canister
  4. Electrical issues such as a blown fuse or wiring problem
  5. Corrosion or damage to the EVAP system components

Symptoms of P1459 Acura

  1. Check engine light illuminated
  2. Decreased fuel efficiency
  3. Rough idling or stalling
  4. Strong fuel odor
  5. Failed emissions test

How to Fix P1459 Acura

  1. Diagnose the issue by using an OBD-II scanner to retrieve the specific trouble code and pinpoint the source of the problem.
  2. Inspect the EVAP system components, including the purge flow switch, hoses, and charcoal canister, for any signs of damage or leaks.
  3. Replace the faulty purge flow switch or any other damaged components in the EVAP system.
  4. Clear the trouble code from the vehicle's computer using the OBD-II scanner.
  5. Perform a drive cycle to ensure that the repair has resolved the issue and that the check engine light does not reappear.

Cost to Fix P1459 Acura

The cost of repairing a P1459 Acura code can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. On average, the repair cost for this type of issue can range from $100 to $300, including parts and labor. It's important to note that diagnostic time and labor rates can vary, so it's recommended to check with local auto repair shops for a more accurate estimate.

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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.

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