Drive Cycle A: Notes

2014 Subaru Legacy 2.5i, Automatic CVT TransSECTION Notes
WARNING: This page is about a different car, the 2014 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
DTC Item Condition
P0087 Fuel Rail/System Pressure - Too Low Complete diagnosis with drive cycle B or C as well.
P0088 Fuel Rail/System Pressure - Too High Complete diagnosis with drive cycle B or C as well.
P0125 Insufficient Coolant Temperature for Closed Loop Fuel Control «Coolant Temp.» at engine start: Less than 15°C (5°F)
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.
P0191 Fuel Pressure Sensor Performance Complete diagnosis with drive cycle B or C as well.
P0196 Engine Oil Temperature Sensor Circuit Range/Performance «Oil Temperature» at engine start: Less than 40°C (104°F)
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) -
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.