Question

P2182 DODGE -what does code P2182 for 2011 Dodge RAM 2500 Cummins mean?

Answer 1

There is no P2182, but there is a P21B2, is this what you have if so this is what it means.

P21B2-EXCESSIVE TIME TO ENTER CLOSED LOOP NOX ABSORBER CONTROL

For a complete wiring diagram, refer to the Wiring Information.

Theory of Operation

When the engine runs in DeNOx mode, the Powertrain Control Module (PCM) monitors how much post injction fuel has been injected. Once it exceeds a threshold, the measured O2 Sensor 1/1 is supposed to be lower than a threshold. If after a sufficient amount of post fuel is injected, the O2 Sensor 1/1 value is still high for a calibrated time, the fail counter is incremented by 1. If it is not, it is decremented by 1. If the counter has been incremented or decremented for a calibrated number of times, and the counter value is greater than a calibrated value, this fault is set.

1. When Monitored:

   With the engine speed above a calibrated threshold for a calibrated time, and ambient air temperature is above a calibrated threshold, and the engine running in DeNOx mode.

2. Set Condition:

   If during post fuel injection, the O2 Sensor 1/1 value is above a calibrated threshold a fail count is recorded as incremented. If not, it is recorded as decremented. After a calibrated number of total counts (incremented and decremented), the counter value is above a calibrated value, a fault is set.

Answer 2

P21B2 RAM - Excessive Time To Enter Closed Loop NOx Absorber Control

Read more: https://www.autocodes.com/p21b2_ram.html