P0420 Diagnostic Trouble Code Discussion for December 2016
Catalyst Efficiency Below Normal (Bank 1)
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| Help Request | Posted | |
| 2012 Honda Ridgeline Sport 3.5L Stall VIN: 5FPYK1F70C P0420: . ... customer complaint is on his way back home from collage his truck staled he pulled over and it would crank but would not start he waited a few min and it started and ran fine no check engine light a few days later it happened again and this time the check ... |
December 15, 2016 | |
| 2000 Toyota 4Runner 2.7L MIL Lamp on VIN: JT3GM84R3Y P0420: Catalyst Efficiency Below Normal (Bank 1). This vehicle has a P0420 cat efficiency code it also has two cats rear o2 is behind both. Just looking for anyone who's dealt with this and how they addressed it. Replace one over the other? Replace both or is there a way to verify which one is the issue? Than... |
December 15, 2016 |
