Today we have a 2010 Chevrolet Cobalt 2.2l with a 5 speed manual transmission that has a check engine light on. Let's see if we can figure out what is going on and get this car back on the road.
Codes:
DTC P0446 -Evaporative Emission (EVAP) Vent System Performance
DTC P0452 -Fuel Tank Pressure (FTP) Sensor Circuit Low Voltage
Tools Used:
Thinkdiag2 All System Bidirectional Control OBD2 Diagnostic Scanner for iOS & Android, Bluetooth5.0 Intelligent Scan Tool with CAN-FD Protocol, AutoVIN, Active Test, 15+ Reset Functions, ECU Coding
ESCAN Elite
Snap-on Zeus
0:00 Intro
0:30 Scanning For Codes
1:40 Looking At Live Data and Sealing Fuel Tank
3:06 Visual Inspection... Uh Oh
4:05 Fixed Wiring
4:30 Checking Live Data and Bidirectionally Controlling The Evap System
7:00 Bidirectionally Controlling The Vent Valve
7:32 Bidirectionally Controlling The Purge Valve
9:50 Removing The Fuel Cap
10:22 Oopsie
10:45 Testing The System Again
13:48 Looking At Mode 6 With Escan
16:20 Using The Zeus To See What Codes Did Not Run
22:00 Coolant Temperature Dropping
25:23 Checking Our Monitors and Mode 6 Data
17:30 Looking At Code Testing Criteria