HINT:

Read freeze frame data using Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air/fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P0505)

Connect Techstream to the DLC3.
Turn the power switch ON (IG).
Turn Techstream ON.
Enter the following menus: Powertrain / Engine and ECT / Trouble Code.

Read the DTCs.

Result

RESULT CHART

Display (DTC output)	Proceed to
P0505	A
P0505 and other DTCs	B

HINT:

If any other codes besides P0505 are output, perform troubleshooting for those DTCs first.

B: GO TO DTC CHART

A: Go to next step

CHECK CONNECTION OF PCV HOSE
OK:

PCV hose is connected correctly and has no damage.

NG: REPAIR OR REPLACE PCV HOSE

OK: Go to next step
CHECK AIR INDUCTION SYSTEM
1. Check for vacuum leaks in the air induction system.
  OK:
  
  No leakage in the air induction system.
NG: REPAIR OR REPLACE AIR INDUCTION SYSTEM

OK: CHECK ELECTRIC THROTTLE CONTROL SYSTEM

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.

Safety Warning

Inspection Procedure

Use the Manual With the Right Hardware

When to See a Mechanic

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