P0420 Diagnostic Trouble Code Discussion for December 2005
Catalyst Efficiency Below Normal (Bank 1)
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| Help Request | Posted | |
| 2001 Subaru Outback 2.5L Hesitation, MIL Lamp on VIN: 4S3BH66501 P0420: Catalyst Efficiency Below Normal (Bank 1). ... prob. p0420 in comp ...not too hard figure out ...the air fuel ratio sensor reading a fixed 1.5 volts i have no info what this should read on scan data my vantage says scan data should used ..butt with no figures need imput on this sensor, please help. |
December 01, 2005 | |
| 1999 Toyota 4Runner SR5 3.4L MIL Lamp on VIN: JT3GN86R3X P0420: Catalyst Efficiency Below Normal (Bank 1). ... light on . Checked codes p0240 inefficent cat converter.The snap shot is as follows, this is with a MasterTech P0420 Calc load 31% engine speed 2268 coolant temp 201.2 f intake air 62.6 f ctp sw off vehical speed 68 mph short f t 1 1,5% ***long ft #1 17.9 ... |
December 20, 2005 | |
| 1997 Mazda 626 LX 2.5L Hesitation, Misfire, Poor Fuel Economy, MIL Lamp on VIN: JKI569HYT9 P0420: Catalyst Efficiency Below Normal (Bank 1). hello people, will some one help me with this ()*&^%$ box, see codes . i`m done throwing parts at it, good wind all 6 cyls, i will buy this car from the customer and personally junk it, this will be a good thing, last resort.has any one worked with these c... |
December 21, 2005 | |
| 1999 Toyota 4Runner SR5 3.4L MIL Lamp on VIN: JT3GN86R3X P0420: Catalyst Efficiency Below Normal (Bank 1). ... light on . Checked codes p0240 inefficent cat converter.The snap shot is as follows, this is with a MasterTech P0420 Calc load 31% engine speed 2268 coolant temp 201.2 f intake air 62.6 f ctp sw off vehical speed 68 mph short f t 1 1,5% ***long ft #1 17.9 ... |
December 22, 2005 | |
| 1997 Kia Sephia GS 1.8L MIL Lamp on VIN: KNAFA1250V P0420: Catalyst Efficiency Below Normal (Bank 1). Runs good hot and cold. Code po420(cat efficiency below threshold- bank 1) came back after cleared. Alldata said rear 02 or converter.Temp 195 deg.-both 02's scan ok.Front .2 to .8 on cruise and rear .3 to .7. I was thinking of switching the o2's if there the ... |
December 31, 2005 |
