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moparfl
moparfl, ASE Certified Technician
Category: Dodge
Satisfied Customers: 6330
Experience:  ASE Master Tech Gold level Chrysler Status 30 years dealership exp
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What does engine code P0404 mean for a 2005 Dodge Grand Caravan

Resolved Question:

What does engine code P0404 mean for a 2005 Dodge Grand Caravan
Submitted: 8 years ago.
Category: Dodge
Expert:  moparfl replied 8 years ago.

Symptom:

P0404 - EGR POSITION SENSOR PERFORMANCE

When Monitored and Set Condition:

P0404 - EGR POSITION SENSOR PERFORMANCE

When Monitored:

Set Condition: The EGR flow or valve movement is not what is expected.

POSSIBLE CAUSES

GOOD TRIP EQUAL TO ZERO

HIGH RESISTANCE IN 5 VOLT SUPPLY

EGR SOLENOID CONTROL CKT

INTERMITTENT CONDITION

EGR SENSOR SIGNAL CIRCUIT OPEN

EGR SENSOR SIGNAL CIRCUIT SHORTED TO GROUND

SENSOR GROUND CIRCUIT OPEN

EGR ASSEMBLY (GROUND)

PCM

TEST ACTION APPLICABILITY

1 Ignition on, engine not running.

With the DRBIIIt, read DTCs and record the related Freeze Frame data.

Is the Good Trip displayed and equal to zero?

All

Yes ! Go To 2

No ! Refer to the INTERMITTENT CONDITION symptom in the

Driveability category.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

2 NOTE: Diagnose all other EGR DTC(s) first before continuing.

Start the engine.

With the DRBIIIt, read the EGR Position Sensor voltage.

Choose a conclusion that best matches the EGR voltage reading.

All

Below 3.5 volts

Go To 3

Between 3.5 volts to 4.3 volts

Go To 4

Above 4.3 volts

Go To 6

146

DRIVEABILITY - NGC

moparfl and 4 other Dodge Specialists are ready to help you
Expert:  moparfl replied 8 years ago.
This is a common failure on this model and you will need to replace the egr valve.