What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P2000NOx ABSORBER EFFICIENCY BELOW THRESHOLDP2000NOX Absorber Efficiency Below Threshold - Bank 1P2000NOX Absorber Efficiency Below Threshold - Bank 1P2000NOX ABSORBER EFFICIENCY BELOW THRESHOLDView all · Manufacturer wording →
Manufacturer communications
9Original wording in English
ISUZU
Reported code forms P2000
ISUZU: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. SPECIAL POLICY ADJUSTMENT REGARDING THE VARIOUS DIAGNOSTIC TROUBLE CODES (DTC) P2201, P2206, P2207, P1490 OR P2000, HAVE BEEN SET DUE TO AN INTERNAL FAILURE OF…
DODGE, RAM
Reported code forms P2000
MIL Illumination Due to P2000, P2A00 and/or P2A01 FRONT O2 sensor. Customer may experience MIL illumination. Further investigation by the technician may find one or more of the following DTC(s) present: P2000 - NOX…
DODGE, RAM
Reported code forms P2000
MIL Illumination Due to P2000, P2A00 and/or P2A01 This bulletin involves verifying all service bulletins related to high sooting issues have been properly addressed, inspecting both Oxygen (O2) sensors and either…
DODGE
Reported code forms P2000
Flash: Diagnostic and System Improvements This bulletin involves selectively erasing and reprogramming the Engine Control Module (ECM) with new software.Trucks exhibiting any DTC related to Oxygen Sensor, Oxygen Sensor…
DODGE
Reported code forms P2000
Flash: Diagnostic and System Improvements This bulletin involves selectively erasing and reprogramming the Engine Control Module (ECM) with new software. Pickup trucks equipped with a 6.7L Cummins diesel have software…
DODGE
Reported code forms P2000
Flash: Diagnostic And System Improvements This bulletin involves selectively erasing and reprogramming the Engine Control Module (ECM) with new software. Pickup trucks equipped with a 6.7L Cummins diesel have software…
Check vehicle applicability
18A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Dodge | RAM 2500 | 2012 |
| Dodge | RAM 2500 | 2011 |
| Dodge | RAM 2500 | 2010 |
| Dodge | RAM 2500 | 2008 |
| Dodge | RAM 2500 | 2007 |
| Dodge | RAM 3500 | 2012 |
| Dodge | RAM 3500 | 2011 |
| Dodge | RAM 3500 | 2010 |
| Honda | CIVIC | 2005 |
| Honda | CIVIC | 2004 |
| Honda | CIVIC | 2003 |
| Isuzu | N-SERIES | 2011 |
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.