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P0446 engine code - 1997 Chevrolet Blazer

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Posted on Jan 02, 2017

skychief2001
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SOURCE: I GOT A 1998 SILVERADO 4X4 ENGINE LIGHT ON CODE P0446

Well code 446 is for a problem with the EVAP system which vents fumes from the gas tank to the vapor canister.
You would need to check the system using a test chart for that code.
You can look online for the test procedure and the equipment required.

Posted on Feb 04, 2014

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How to fix code p0446 on a pontiac g6


P0446 Evaporative Emission Control System Vent Control Circuit Malfunction. The code P0446 is set when the engine computer recognizes a fault or restriction at the vent control part of the Evaporative emission control system (EVAP).

https://www.obd-codes.com/p0446

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Read more: http://www.engine-codes.com/p0446_toyota.html

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I GOT A 1998 SILVERADO 4X4 ENGINE LIGHT ON CODE P0446


Well code 446 is for a problem with the EVAP system which vents fumes from the gas tank to the vapor canister.
You would need to check the system using a test chart for that code.
You can look online for the test procedure and the equipment required.

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Service engine light is on reading code p0446 for 2003 chevrolet impala pictures on how to fix


A code P0446 could mean one or more of the following has happened:

  • Faulty vent valve
  • Open, short or excessive resistance on Vent valve control circuit
  • Blockage of vent valve
  • Bad PCM
  • use maxiscan us703 clear the fault codes.

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Check engine code "P0446 Evap Control System Vent Control Circ"


Unfortunately, this code has nothing to do with the gas cap....
A code P0446 could mean one or more of the following has happened:
  • Faulty vent valve
  • Open, short or excessive resistance on Vent valve control circuit
  • Blockage of vent valve
  • Bad PCM
Here are some things you could try to fix it:
  • Replace Vent valve
  • Repair open, short, or resistance problem in control circuit
  • Repair open, or short, or resistance problem in power circuit
  • Replace PCM


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how did you fix your p0446 code?

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