2000 toyota 4runner code P0420

castironman
Tue, 22 Jun 2010 01:22:11 +0000
Maintenance/Repairs

I am trying to troubleshoot a 4runner with 135k miles, auto, 3.4 V6 California emissions.

This is the freeze data:

PID Description Value Units

0x02 Freeze frame DTC P0420 -

0x03 Fuel system status Closed-loop, using oxygen sensor feedback to determine fuel mix -

0x04 Calculated load value 34.12 %

0x05 Engine coolant temperature 197.6 F

0x06 Short term fuel % trim - Bank 1 0.78 %

0x07 Long term fuel % trim - Bank 1 3.91 %

0x0C Engine RPM 2287 RPM

0x0D Vehicle speed 68.97 MPH

0x0F Intake air temperature 95 F

So far the front and back Ox sensor was replaced and the MAF cleaned to clear a P0171 code. Thank you for your reply,

6 posts - 5 participants