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P0420 Diagnostic Trouble Code Discussion for June 2018

Catalyst Efficiency Below Normal (Bank 1)


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Trouble Ticket Help Requests for DTC P0420
Help Request Posted
2006 Volkswagen Jetta 2.5 2.5L No Start, MIL Lamp on, Won't accelerate VIN: 3VWSG71K26
P0420: Catalyst efficiency Below Threshhold. ... complaint was the Check Engine and EPC Lights are on AND it won't accelerate. Sure enough, push the gas pedal to the floor, it won't accelerate. So to see if anything would change, I cleared the codes. Now the damn thing won't start. The code P0322 ha...
June 07, 2018