is the A/F ratio sensor on a 2003 Honda 3.0 V6 fuse protected?

Question

Check engine came on, OBD code was PO172, fuel mixture rich. I cleared the code then started getting a p2237 code. first code PO172 hasn't come back yet but after clearing the p2237, the p2237 keeps returning after about 15 miles. I cleaned the MAP sensor, replaced the air intake hose due to a tear in it and also replaced the air filter with a new K&N filter. The upstream O2 sensor was replaced about 14 months ago. I'm unsure as to what a Air/Fuel ratio sensor is, but I believe it is the same thing as a downstream O2 sensor. Is that correct?
I also read that the on some Nissans the A/F sensor is fuse protected. Are they fuse protected on 2003 Honda Accord 3.0 V-6?

Answer 1

Hi there,

This is not a fuse issue, there isn't a fuse and if there were you would have a different code. This code is brought about by other conditions. Here is a listing of some of the issues.

P2237 HONDA - Rear Air/Fuel Ratio Sensor Bank 1 Sensor 1 IP Line High Voltage

Read more: https://www.autocodes.com/p2237_honda.html