Engine-Codes - Generic - P2000

P2000 Code - NOx Trap Efficiency Below Threshold Bank 1

- Code Popularity: 49,213 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
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What are the Possible Causes of the DTC P2000?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty NOX Three-Way Catalytic Converter (TWC)
  • Faulty Secondary HO2S (Sensor 2)
  • Faulty Third HO2S (Sensor 3)
  • Software update
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How to Fix the DTC P2000?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P2000 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the P2000 Code Mean?

The NOx Adsorptive Three-Way Catalytic Converter (TWC) absorbs NOx created during lean-burn running when the oxygen concentration is high. Then the engine is put into a richer running mode where the oxygen concentration and NOx levels are low, and the absorbed NOx is released, keeping the average NOx emissions low. The Diagnostic Trouble Code (DTC) will set when the NOx Adsorptive Catalyst Efficiency is below the threshold.

P2000 Code - NOx Trap Efficiency Below Threshold Bank 1

Need more Information on the Code?

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Code P2000 Information for Specific Makes

  • P2000 Dodge Oxides Of Nitrogen Trap Efficiency Below Threshold Bank 1  
  • P2000 Honda NOx Adsorptive Catalyst Efficiency Below Threshold

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