P2a00 Honda -

Question

What is the P2A00 fault code for? Air flow sensor, primary or secondary air to fuel ratio sensor?

Answer 1

HI there,

This code is actually for the bank 1 o2 sensor, this is the sensor BEFORE the catalytic converter. It's called an Air fuel ratio sensor these days because it does a bit more then just the O2 sensor, but it looks identical externally.