Here you can order Lambda/O2 Removal.
This is necessary when you need to remove the catalyst.
The second lambda probe is installed after the catalyst and is used only to control its effectiveness.
When the catalyst begins to lose the ability to burn off (clean) exhaust gases, the second lambda probe corrects the mixture and ECU adds more fuel for better combustion in the catalyst. When the fuel correction goes beyond of possibility, the ECU turn on second-time errors and an inefficient catalyst.
The catalyst requires removal:
1. Tuning the exhaust system.
2. Aging of the catalyst or mechanical crash.
Please check that the fuel system is fixed. or removing catholicizer doesn`t solve the problem.
Errors of the second lambda probe can cause of:
1. The fuel pressure is not correct.
2. Faulty air mass meter (MAP, MAF).
3. Intake manifold problems.