GM Service Manual Online
For 1990-2009 cars only

System

DTCs Required to Set System Status to YES

Catalyst

DTC P0420 or P0430

EVAP

DTC P0442

DTC P0443

DTC P0446

DTC P0452

DTC P0453

DTC P0455

DTC P0496

DTC P0498

DTC P0499

EGR

DTC P0401

DTC P0403

DTC P0404

DTC P0406

Oxygen Sensor

DTC P0133 or P0153

DTC P0135 or P0155

DTC P0137 or P0157

DTC P0138 or P0158

DTC P0139 or P0159

DTC P0141 or P0161

DTC P2238 or P2241

DTC P2239 or P2242

DTC P2243 or P2247

DTC P2245 or P2249

DTC P2252 or P2255

DTC P2253 or P2256

DTC P2297 or P2298

DTC P2414

DTC P2415

DTC P2627 or P2630

DTC P2628 or P2631

Oxygen Sensor Heater

DTC P0030, P0036, P0050, or P0056