NOx Trap Efficiency Below Threshold Bank 1
2016-2016 Ford Taurus 2.0L I4 EcoBoost
The 2016 Ford Taurus is equipped with a 2.0L inline-4 turbocharged gasoline engine. Below you'll find detailed p2000 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
The NOx storage catalytic converter on bank 1 is not efficiently reducing nitrogen oxides.
Symptoms
- Check engine light
- Failed emissions test
- Reduced fuel economy
Common Causes
- Degraded NOx trap
- Sulfur contamination
- Exhaust leak before sensor
- Faulty NOx sensor
Diagnostic Steps
- Read freeze frame data
- Check NOx sensor readings upstream and downstream
- Inspect for exhaust leaks
- Perform desulfation procedure if applicable
Repair Notes
Replace NOx trap if desulfation fails. Check upstream components for causes of contamination.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P2000 on Other Vehicles
Common Questions
What does code P2000 mean on a 2016-2016 Ford Taurus?
P2000 stands for "NOx Trap Efficiency Below Threshold Bank 1". The NOx storage catalytic converter on bank 1 is not efficiently reducing nitrogen oxides.
What are the symptoms of P2000 on a Ford Taurus?
Common symptoms of P2000 include: Check engine light, Failed emissions test, Reduced fuel economy.
What causes P2000 on a 2016-2016 Ford Taurus?
Common causes of P2000 include: Degraded NOx trap, Sulfur contamination, Exhaust leak before sensor, Faulty NOx sensor.
Last updated: March 2026
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