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.

2012 Subaru Outback RFACTORY OEM SERVICE PROCEDURE

Camshaft Position Sensor (Method With Oscilloscope)

Prepare an oscilloscope.
Remove the glove box lid assembly. Refer to GLOVE BOX .

Connect the probe to ECM connector.

Intake camshaft position sensor

Fig 1: Connecting Probe To ECM Connector (Intake Camshaft Position Sensor)

Courtesy of SUBARU OF AMERICA, INC.

Camshaft position sensor	Terminal No.	Probe
RH	24	+
LH	16	+
RH and LH	30	-

Exhaust camshaft position sensor

Fig 2: Connecting Probe To ECM Connector (Exhaust Camshaft Position Sensor)
Courtesy of SUBARU OF AMERICA, INC.

Camshaft position sensor	Terminal No.	Probe
RH	23	+
LH	29	+
RH and LH	30	-

Start the engine and let it idle.
Check that the pattern is the same as the waveform and voltage shown below.

Fig 3: Camshaft Position Sensor Waveform
Courtesy of SUBARU OF AMERICA, INC.
After inspection, install the related parts in the reverse order of removal.

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.