Possible causes

– Faulty front O2 Sensor 1
– Exhaust leak
– Intake air leaks
– Fualty Mass Air Flow (MAF) sensor
– Fuel pressure
– Fuel injector

When is the code detected?

The ECM will set the P2A00 code if it detects that the actual O2 measurements does not match the expected value.

Symptoms

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

P2A00 DODGE Description

The engine aftertreatment system monitors the O2 content in the diesel engine exhaust. The Engine Control Module (ECM) monitors the exhaust gases for oxygen content and varies the rich.lean fuel mixture of the intake air fuel mixture to adjust the system. This diagnostic checks to make sure that the o2 content matches the expected O2 for the engine operating conditions.