P2001 Dodge Oxides of Nitrogen Trap Efficiency Below Threshold Bank 2
Possible causes
– Sensor or solenoid faulty
– Connector terminal contact is damaged or corroded
– Wire harness – Check harness for correct voltage, open, short to ground or short to voltage
– Update control unit software – Check for the latest control unit update
– Powertrain or Engine Control Module faulty
– Catalytic converter damage
– Catalytic converter improper operation
– Connector terminal contact is damaged or corroded
– Wire harness – Check harness for correct voltage, open, short to ground or short to voltage
– Update control unit software – Check for the latest control unit update
– Powertrain or Engine Control Module faulty
– Catalytic converter damage
– Catalytic converter improper operation
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
Citroen Vehicle:Dodge Caravan,Dodge Caliber,Dodge Challenger,Dodge Dakota,Dodge Durango,Dodge Journey,Dodge Nitro,Dodge Ram 2500