Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2015 Subaru WRX STIFACTORY OEM SERVICE PROCEDURE

Exhaust Side

Disconnect the ground cable from battery.
Lift up the vehicle.
Remove the under cover. <Ref. to REMOVAL , Front Under Cover.>
Remove the engine harness cover. (right side only.)

Fig 1: Removing Engine Harness Cover
Courtesy of SUBARU OF AMERICA, INC.
Remove the clip holding the engine harness. (Left side only)

Fig 2: Locating Engine Harness Clip
Courtesy of SUBARU OF AMERICA, INC.
Disconnect connector (A) from the camshaft position sensor, and remove the camshaft position sensor from under the cylinder head.
- RH side
  
  Fig 3: Locating Camshaft Position Sensor Bolt (RH Side)
  Courtesy of SUBARU OF AMERICA, INC.
- LH side
  
  Fig 4: Locating Camshaft Position Sensor Bolt (LH Side)
  Courtesy of SUBARU OF AMERICA, INC.

Factory Service Tools

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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.