Drive Cycle A
| DTC | Item | Condition |
|---|---|---|
| P0128 | Coolant Thermostat (Engine Coolant Temperature Below Thermostat Regulating Temperature) | - |
| P0141 | O2 Sensor Heater Circuit (Bank 1 Sensor 2) | - |
| P014C | O2 Sensor Slow Response - Rich to Lean (Bank 1 Sensor 1) | - |
| P014D | O2 Sensor Slow Response - Lean to Rich (Bank 1 Sensor 1) | - |
| P015A | O2 Sensor Delayed Response - Rich to Lean (Bank 1 Sensor 1) | - |
| P015B | O2 Sensor Delayed Response - Lean to Rich (Bank 1 Sensor 1) | - |
| P0171 | System Too Lean (Bank 1) | Complete diagnosis with drive cycle B or C as well. |
| P0172 | System Too Rich (Bank 1) | Complete diagnosis with drive cycle B or C as well. |
| P0196 | Engine Oil Temperature Sensor Circuit Range/Performance | - |
| P0300 | Random/Multiple Cylinder Misfire Detected | Complete diagnosis with drive cycle B or C as well. |
| P0301 | Cylinder 1 Misfire Detected | Complete diagnosis with drive cycle B or C as well. |
| P0302 | Cylinder 2 Misfire Detected | Complete diagnosis with drive cycle B or C as well. |
| P0303 | Cylinder 3 Misfire Detected | Complete diagnosis with drive cycle B or C as well. |
| P0304 | Cylinder 4 Misfire Detected | Complete diagnosis with drive cycle B or C as well. |
| P0420 | Catalyst System Efficiency Below Threshold (Bank 1) | - |
| P0459 | Evaporative Emission System Purge Control Valve Circuit High | - |
| P2096 | Post Catalyst Fuel Trim System Too Lean (Bank 1) | Complete diagnosis with drive cycle B or C as well. |
| P2097 | Post Catalyst Fuel Trim System Too Rich (Bank 1) | Complete diagnosis with drive cycle B or C as well. |
| P2195 | O2 Sensor Signal Biased/Stuck Lean (Bank 1 Sensor 1) | - |
| P2196 | O2 Sensor Signal Biased/Stuck Rich (Bank 1 Sensor 1) | - |
Diagnostic procedure:
- Drive for 20 minutes or more at a constant speed of 80 km/h (50 MPH) or more.
- Stop the vehicle and idle for one minute.
- Read the temporary code using the Subaru Select Monitor or general scan tool. <Ref. to OPERATION , Read Diagnostic Trouble Code (DTC).>