: 96 Concours Northstar W/PC0240 Code



giacopuzzi
06-12-05, 06:21 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!

Ranger
06-12-05, 07:58 PM
P0240 - Turbocharger Boost Sensor 2 Performance :hmm:

giacopuzzi
06-12-05, 08:06 PM
I believe it's PC0420...catalyst system efficiency low?

Ranger
06-12-05, 09:18 PM
Well, don't replace the cat on my account but if the O2 sensor(s) where bad they would set their own codes.

giacopuzzi
06-13-05, 12:39 AM
That is exactly my theory. Thanks for the assist! New Cat tomorrow.

giacopuzzi
06-22-05, 04:12 PM
New Converter $211.34 @ Scottsdale Muffler. Fixed the problem!;)

Thanks!