1998 dodge Dakota 3.9 v6 check engine light doesn't come on at start up can't pass smog if check engine light doesn't come on,I change bulb and still not coming on

SOURCE: jus changed oxegen sensor and

Get a code reader on this and relate the numbers to the fault possibilities. Go from there and good luck...accordianman

Mike Butler

• 6674 Answers
• Posted on Apr 19, 2009

SOURCE: 2001 DODGE INTREPID CHECK ENGINE LIGHT IS ON

Replace your "intake air temperature sensor".

Jason Phillips

• 500 Answers
• Posted on May 23, 2009

SOURCE: my check engine light does not flash when i turn key before start

bulb is probably blown... you have to remove the instrument cluster to change the bulb

SOURCE: The check engine light stays on or comes back on

Hi:
Your P0446 code is a Evap vent valve code: 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.
Symptoms There will be no obvious symptoms to driver, other than MIL illumination.
Causes 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

• Replace Vent valve
• Repair open, short, or resistance problem in control circuit
• Repair open, or short, or resistance problem in power circuit
• Replace PCM

Iron

• 3018 Answers
• Posted on Aug 31, 2011

SOURCE: Got a P1404 Fault on

• Hi Jeff,

• What causes this error code is an EGR fault. If you remove the EGR and give it a real good cleaning and clear the code there is a good chance the code will stay away. Those EGR's get real clogged.

• There is a possibility that a simple good cleaning will not keep the code away in which case I would recommend replacing the EGR.

• If you have any comments please feel free to leave them here.
• Hope this helps and thank you for using FixYa.