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 P2176

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

Symptoms

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

P2176 DODGE Description

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