P0420 Diagnostic Trouble Code Discussion for December 2010
Catalyst Efficiency Below Normal (Bank 1)
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| Help Request | Posted | |
| 2003 Mini Cooper S 1.6L Excessive Emissions VIN: WMWRE33453 P0420: oxygen storage capacity. customer stated to us that the vehicles catalytic converter gets red hot, after driving for vehicle for at 30-45 min. the check engine light is on(po420) and the flex pipe before cat and after manifold was melted. customer replaced damaged flex pipe and the ox... |
December 13, 2010 | |
| 2000 Dodge Caravan SE 3.3L Monitors won't run VIN: 2B4GP45G5Y P0420: Catalyst Efficiency Below Normal (Bank 1). ... to run O2,cat and egr monitors.needs 1 more monitor to run to pass Illinois emissions.checked all the forums,tried what I thought was applicable,still no go.Tried driving the trace that Rick E.had posted...didn't work either..No codes,no pending codes,had ... |
December 17, 2010 |
