Question

Toyota Tacoma 2.4L with obd codes, p0420, p0442, p0456. could all three be because of the same leak?

Answer 1

The P0456 and P0442 are for the EVAP small leak, but the P0420 code is for the catalytic converter.

P0456 TOYOTA - EVAP Control System Leak Detected Very Small Leak
Read more: https://www.autocodes.com/p0456_toyota.html

P0442 TOYOTA - EVAP System Small Leak Detected
Read more: https://www.autocodes.com/p0442_toyota.html

P0420 TOYOTA - Catalyst System Efficiency Below Threshold Bank 1
Read more: https://www.autocodes.com/p0420_toyota.html