P2000

DTC P2000: NOx Adsorptive Catalytic System Efficiency Below Threshold**

NOTE:
- If some of the DTCs listed below are stored at the same time as DTC P1420* (P2000)**, troubleshoot those DTCs first, then recheck for DTC P1420* (P2000)**.
- Information marked with an asterisk (*) applies to '02-03 models.
- Information marked with double asterisks (**) applies to '04 models.

P0137, P0138: Secondary HO2S (Sensor 2)
P0141: Secondary HO2S (Sensor 2) heater

P0143, P0144: Third HO2S (Sensor 3)
P0147: Third HO2S (Sensor 3) heater

1. Reset the ECM/PCM.
2. Start the engine. Hold the engine at 3,000 rpm with no load (in Park or neutral) until the radiator fan comes on.
3. Keep the engine speed at 4,000 rpm about 10 minutes.
4. Test-drive under following conditions.

- 55 - 65 mph (89 - 105 km/h) steady speed
- With the CVT in D position, M/T in 4th or 5th gear
- Until the readiness code or Temporary DTC P1420* (P2000)** and/or P1420* (P2000)** is set

5. Check for a Temporary DTC with the HDS or a scan tool.

Is Temporary DTC P1420* (P2000)** and/or P1420* (P2000)** indicated?

YES - Check the NOx adsorptive three way catalytic converter (NOx adsorptive TWO. If necessary, replace the NOx adsorptive TWC.

NO - Intermittent failure, system is OK at this time.