Question about 2000 Daewoo Nubira

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P0446 daewoo check engine light came on and this is the code that showed up

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That's an OBD- II trouble code.
Evaporative Emission Control System Vent Control Circuit Malfunction...


Possible solutions to fix this problem would include..

Replace vent valve.
Repair open, short, or resistance problem in control circuit.
Repair open, short, or resistance
problem in power circuit.
Replace PCM.

I hope this helps.

Posted on May 11, 2013

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Posted on Jan 02, 2017

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SOURCE: 2000 Daewoo, check engine light is on. How to turn

hate to tell you this,but park next door to your test site,get out and disconnect your battery for about 30 secs. when you reconnect it,it puts your engine into an "open loop" mode, for about 25-50 miles,and while in the loop,that annoying light wont come on. you still need to goto auto zone and have them pull the codes to tell you whats going on to cause the light to come on,but this trick will get ya your inspection sticker.

Posted on May 01, 2010

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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.

Feb 03, 2014 | 1998 Chevrolet Chevrolet silverado

1 Answer

My 2000 daewoo nubira is hesitating and jolting and it also loses power when pushing on the gas some times.


P0446 - Evaporative Emission Control System Vent Control Circuit Malfunction

This fault will not cause any driveability related symtoms, it just turns on the check engine light. But that is not saying it is impossible. She a trained technician and have further dianostics run on the code.

Jan 22, 2014 | 2000 Daewoo Nubira

1 Answer

Need to know what obd code PO446 AND PO128 for a 2002 Daewoo Nubira means


P0128 - Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)
This means that the engine's PCM detected that the engine has not reached the required temperature level within a specified amount of time after starting the engine. The intent of the P0128 code is to indicate a faulty thermostat. Similar codes: P0125

In determining the engine did not reach a "normal" temperature, it takes into account the length of time the vehicle has been running, the intake air temperature (IAT) sensor reading, the engine coolant temperature (ECT) sensor reading, and the speed of the vehicle.


P0446 - Evaporative Emission Control System Vent Control Circuit Malfunction
Evap vent valve has only one purpose. It closes in order to seal the vent so the EVAP system can pressurize and ensure there are no leaks. Evap vent valve is usually supplied Batt. voltage with key on. The ECM's driver controls the ground, and when grounded, activates the valve (closing it). If the ECM detects a short to ground, and open,or a short to battery voltage on the control circuit, P0446 will set. Code also may refer to ECM detecting that EVAP system is unable to achieve or maintain vacuum during test.


Hope this helps.

Sep 29, 2011 | 2002 Daewoo Nubira

1 Answer

Had OBD2 codes P0441 & P0446 on my 1999 Toyota Corolla. Replaced the VSV CHARCOAL EVAPORATORE, disconnected the battery, check engine light went out. came back on this am, took the car to advanced auto...


According to my 2002 Toyota Tundra manual (and it may be different for your car) P0125 is as follows:
Insufficient Coolant Temperature
for Closed Loop Fuel Control

This would seem unrelated to your original problem.

Aug 22, 2010 | 1999 Toyota Corolla

1 Answer

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


Nov 17, 2009 | 2002 Toyota Corolla

1 Answer

Code p0446 1997 nissan maxima


how did you fix your p0446 code?

Apr 21, 2009 | 1997 Nissan Maxima

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