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Try replacing the evaporator vent valve. It closes in order to seal the vent so the system can pressurize and ensure there are no leaks.
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Why does dtc 446 set on 2000 avalanche?
Trouble code P0446 means: EVAP Vent System Performance
What does DTC Code P0174 on 2002 Mitsubishi montero mean?
Trouble code P0174 means:System too lean (Bank 2)
What does DTC Code P0171 for Mitsubishi 2002 Montero xls mean?
Trouble code P0171 means:System too lean (Bank 1)
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What is Raymond James DTC code?
What is Rayond James & Associates DTC number?
What is DTC p0755 on 2002 Chrysler voyager?
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What does companion dtc mean on a pcm or ecm?
If the Pcm sets a code saying that it's companion has dtc, you need to check the Ecm because it will have a code in it.If the Pcm sets a code saying that it's companion has dtc, you need to check the Ecm because it will have a code in it.
What is DTC?
Diagnostic Trouble Code
What is the DTC Code for UBS?
0221
