06-12-05, 07:21 PM
96 Concours Northstar W/PC0240 Code and "Service Emissions System" displayed. Do I replace the Converter or the O2 Sensors? If Sensors, which ones? Runs great but gas mileage has dropped recently. I've also noticed black deposits comming out of left exhaust. HELP!
P0240 - Turbocharger Boost Sensor 2 Performance :hmm:
06-12-05, 09:06 PM
I believe it's PC0420...catalyst system efficiency low?
Well, don't replace the cat on my account but if the O2 sensor(s) where bad they would set their own codes.
06-13-05, 01:39 AM
That is exactly my theory. Thanks for the assist! New Cat tomorrow.
06-22-05, 05:12 PM
New Converter $211.34 @ Scottsdale Muffler. Fixed the problem!;)