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P0446 2002 Toyota Echo Code - EVAP System Vent Control Circuit

- Code Popularity: 7,444 Views
- Repair Importance Level: 1/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P0446 2002 Toyota Echo?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Missing Fuel cap
  • Incorrect fuel filler cap used
  • Fuel filler cap remains open or fails to close
  • Foreign matter caught in fuel filler cap
  • Incorrect fuel tank vacuum relief valve
  • VSV for vapor pressure sensor
  • ECM
⚠ Does your Toyota have Safety Recalls? → Check here

How to Fix the DTC P0446 2002 Toyota Echo?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

There is a Factory Service Bulletin for the 2002 Toyota Echo:
2002 Toyota Echo Factory Service Bulletin OBDII Code P0446

Search for P0446 2002 Toyota Echo Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0446 2002 Toyota Echo code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • A noticeable fuel odor may result from fuel vapor release

Code P0446 2002 Toyota Echo Description

The Evaporative System (EVAP) canister vent control valve is located on the EVAP canister and is used to seal the canister vent.
This solenoid valve responds to signals from the Engine Control Module (ECM). When the ECM sends an ON signal, the coil in the solenoid valve is energized. A plunger will then move to seal the canister vent. The ability to seal the vent is necessary for the on board diagnosis of other evaporative emission control system components. This solenoid valve is used only for diagnosis and usually remains open.
The P0446 code is triggered when an improper voltage signal is sent to Engine Control Module through the EVAP canister vent control valve.

OBDII Code P0446 2002 Toyota Echo - EVAP System Vent Control Circuit - AutoCodes.com
P0446 2002 Toyota Echo Code - EVAP System Vent Control Circuit

Need More Information on the Code?

Need more information on how to fix the P0446 2002 Toyota Echo code? Get Access to Factory Service Manuals

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Code P0446 2002 Toyota Echo comments

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