P0420 Diagnostic Trouble Code Discussion for November 2006
Catalyst Efficiency Below Normal (Bank 1)
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| Help Request | Posted | |
| 2001 Nissan Maxima SE 3.0L MIL Lamp on VIN: D71T838056 P0420: Catalyst Efficiency Below Normal (Bank 1). customer complaint of mil, no drivibilty problem,, does this car need a cat. or a maf |
November 12, 2006 |
