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Dan Kupiec Posted on Jan 10, 2014
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Emissions Code Hi, I have a 2000 Toyota Tundra 6cyl 3.4L that has a check engine light that is on. I should note that the gas gauge is broken also and swings around violently sometime. I had it checked and the following codes come up: The MIL is commanded On. Emissions_related powertrain DTCs, Mode 3 Electronic control Unit ID: 10 P0441 EVAP control System Incorrect Purge Flow Continuously monitored systems DTCs, Mode 7: Electronic Control Unit ID:10 P0441 EVAP control system Incorrect Purge Flow That is it. I am trying to get it passed CA emissions and have been looking for a solution. I replaced the EVAP canister, (with a used part) and I still get the codes. I am now looking at the PWM Vacuum Sensor or the Gas gauge. I have been told that the gas gauge would not cause an emissions code like this. other than that I guess I could replace the fuel filter. Any thoughts. Thanks Very Much Danny

  • Allen Lightsey
    Allen Lightsey Apr 19, 2017

    This video can give you some insight on the problem you are describing

    https://youtu.be/Dl9Bi_kuWkY

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1 Answer

Lodhi Autos

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  • Toyota Master 992 Answers
  • Posted on Jan 10, 2014
Lodhi Autos
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Error Code: P0441
Fault Location:
Evaporative Emission (EVAP) System - Incorrect Flow Detected
Possible Cause:
Malfunction Indicator Lamp (MIL) active.
- Purge control VSV connector disconnected.
- Evaporative Emission (EVAP) Canister Purge Regulator Valve is faulty/jammed.
- Evaporative Emission (EVAP) Canister Purge Solenoid Valve faulty/jammed.
- Evaporative Emission (EVAP) Canister Sealing faulty.
- Pipes between Tank Breathing and Throttle Body leaky/blocked.
- Hose connection(s).
- Intake leak.
Solutions:
- Check Evaporative Emission (EVAP) Canister Purge Regulator Valve.
- Perform Output Test.
- Check Evaporative Emission (EVAP) Canister Purge Solenoid Valve.
- Check Evaporative Emission (EVAP) Canister.
- Perform Basic Setting.
- Check Pipes between Tank Breathing and Throttle Body.

2 Related Answers

Anonymous

  • 71 Answers
  • Posted on Jun 21, 2009

SOURCE: P0441 EVAP Control System Incorrect Purge Flow

Test the purge valve and the vent valve for leaks. This can only be done with a Tech 2 and or a vacuum pump.

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Anonymous

  • 335 Answers
  • Posted on Jun 09, 2011

SOURCE: the service engen soon light

Code P1870 is a transmission code for excessive slipage. this can be caused by allot things inside the transmission. clutch wear, seals worn out. some checking will be required. the first thing to do, is have the vehicle driven with a scan tool that reads real time data. just a code reader. this will pinpoint the problem to the inside of the tranmission. in some cases just a replacement valve body inside the trans will correct this code. another way you can handle this, drop the transmsission pan down, if there is allot of debris in the body of the pan, then you can pretty much count on a complete overhaul of transmission

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