P0420 Diagnostic Trouble Code Discussion for April 2017
Catalyst Efficiency Below Normal (Bank 1)
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| Help Request | Posted | |
| 2012 Kia Rio EX 1.6L Poor Idle Quality, Stall VIN: KNADN4A32C P0420: Cat below eff. ... foot on brake, idle starts to surge between 400-800 rpm and will get low enough that it eventually dies out. if you take your foot off the brake it doesn't seem to die out anymore or if you put it in park and put your foot on brake it doesn't die out. we d... |
April 04, 2017 | |
| 2012 Kia Rio EX 1.6L Poor Idle Quality, Stall VIN: KNADN4A32C P0420: Cat below eff. ... foot on brake, idle starts to surge between 400-800 rpm and will get low enough that it eventually dies out. if you take your foot off the brake it doesn't seem to die out anymore or if you put it in park and put your foot on brake it doesn't die out. we d... |
April 06, 2017 | |
| 2003 Nissan Frontier SE 3.3L Misfire VIN: 1N6ED29XX3 P0420: Catalyst Efficiency Below Normal (Bank 1). Previously we have cleaned spark plug cyl2 , replaced cyl 2 injector, ran bg induction clean through the engine. We checked cylinder head gasket with block tester( liquid sniff test)-ok compression good at 120 psi, spark weak. Replaced with new distributor ass... |
April 17, 2017 | |
| 2008 Chevrolet Avalanche LS 5.3L MIL Lamp on VIN: 3GNFK12318 P0420: cat efficiency. ... p0443 and no other codes. When I went to check the sol I found it unplugged. So I plugged it in and cleared the codes. Then 18 miles later the check engine light comes back on. which I thought that it would thinking someone unplugged it for a reason. But w... |
April 25, 2017 | |
| 2011 Volvo XC60 3.2 3.2L Misfire, MIL Lamp on VIN: YV4952DL3B P0420: cat system efficiency below threshold b1. vehicle came in no start and no compression. found that car had jumped timing. a guided came apart and lodged between cam and chain. sent head off and reinstalled. used Volvo kit to time up engine. it starts and runs good. but has a rough idle at times. will s... |
April 27, 2017 |
