OBD-II Diagnostic Trouble Code
P2001
NOx Trap Efficiency Below Threshold Bank 2
P
Powertrain
engine / trans
engine / trans
2
Generic
SAE standard
SAE standard
0
Fuel & air / aux emission
01
NOx Trap Efficiency Below Threshold Bank 2
Severity · general guide
Moderate
Fix soon — usually won't strand you
Code type
Generic
System
Powertrain