P0431 Diagnostic Trouble Code Discussion for March 2004
Warmup Catalyst System Efficiency Low (Bank 2)
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| Help Request | Posted | |
| 2000 Volkswagen Passat GLS 2.8L MIL Lamp on VIN: B8YE230886 P0431: Warm Up Catalyst Efficiency Below Threshold Bank 2. ... light coming on for code P0431 Warm Up Catalyst Efficiency Below Threshold (Bank 2) ,P0421 Warm Up Catalyst Efficiency Below Threshold (Bank 1) Customer had car at dealer first with code P0300, P0431,P0421 had plugs replaced and codes cleared . Mil light c... |
March 24, 2004 |
