Possible causes

– Restricted air inlet
– Open or short circuit condition
– Failed Manifold Absolute Pressure (MAP) sensor
– Failed Throttle Position (TP) sensor

Tech notes

There is a factory service bulletin for the following Dodge models:

2004 Dodge Ram Truck
2004 Dodge Durango
Dodge Factory Service Bulletin OBDII Code P2174

The bulletin suggest starting by cleaning the throttle body and clearing the code

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)

P2174 DODGE Description

The calculated Manifold Absolute Pressure (MAP) value is greater than the expected MAP value

DODGE Technical Service Bulletins for P2174 code