|
Certified Porsche addict
Join Date: Dec 2007
Location: On a winding, hilly road in Tennessee.
Posts: 1,238
|
Error code P0421?
I'm getting check engine light and my Durametric shows - P0421 Bank one catalyst warm-up efficiency below threshold. I'll clear it but it will come back after 20-30 miles. What's the prognosis doctor? Oh, this is on my '07 Cayman S with 58,000 miles. 
__________________
Tennessee Region SCCA & PCA
Current projects - '87 944 Turbo, '87 924S, '82 931, '10 Boxster (the girlfriend)
Past projects - '83 944, '02 Boxster (x2), '99 Boxster, '14 Cayman,'72 Opel GT, '75 280Z, '90 300ZX, '87 944S, '87 944 Turbo, '88 924S (x2), '07 Cayman S, '73 914, '88 MR2 AW11
|