The P2001 trouble code relates to the NOx (Nitrogen Oxide) adsorber efficiency below threshold in bank 2.
P2001 NOx Adsorber Efficiency Below Threshold Bank 2
Code symptoms P2001.
1. Decreased fuel efficiency.
2. Poor engine performance.
3. Increased emissions.
4. The Check Engine Light (CEL) may be illuminated.
This code is common in brands such as:: Chevrolet, Renault, Ford, Toyota, Nissan, Mercedes Benz, Honda.
Causes of the code P2001.
1. Malfunctioning NOx adsorber.
2. Exhaust leaks.
3. Faulty oxygen sensor.
4. Engine misfire.
5. Fuel system issues.
Code Solutions P2001.
1. Inspect and replace the NOx adsorber if it is malfunctioning.
2. Check for exhaust leaks and repair as necessary.
3. Test and replace any faulty oxygen sensors.
4. Address any engine misfire issues.
5. Ensure the fuel system is operating correctly, checking for issues such as clogged fuel injectors or a malfunctioning fuel pressure regulator.