Parts for your 2008 Subaru Tribeca-Camshaft sensor

2008 Subaru Tribeca Camshaft Sensor — What It Does and When to Replace It

Yes — the 2008 Subaru Tribeca absolutely uses camshaft position sensors. Technical references confirm fitment: the Subaru Factory Service Manual for the MY08 Tribeca (EZ36 engine) specifies left-hand and right-hand camshaft position sensors for AVCS control and sequential injection, Subaru’s parts catalogue lists two camshaft position sensors fitted to the 2008 Tribeca’s EZ36 H6, and professional databases such as Mitchell1/ProDemand and ALLDATA show component locations and diagnostics for Bank 1 and Bank 2 CMP sensors. That means the camshaft-sensor is relevant, fitted, and critical on the 2008 Subaru Tribeca.

On the 3.6‑litre EZ36, the camshaft sensor’s job is to report the exact position of the cam(s) so the ECU can time fuel injection and ignition, and manage Subaru’s AVCS (variable valve timing). When a sensor goes out of whack, the ECU loses precise phasing — cue rough idle, hard starts, sluggish performance, increased fuel use, and a glowing check engine lamp with fault codes like P0340/P0345. If your 2008-subaru-tribeca camshaft-sensor is unhappy, you’ll feel it.

They aren’t a regular “replace by kilometres” item, but they do benefit from a look during scheduled servicing:

• Inspect the connectors and wiring for oil wicking, brittleness, or broken locks.
• Check for oil leaks at the sensor body or O‑ring, replace the O‑ring if seeping.
• Keep engine oil and filter changes on time — clean oil helps AVCS operate smoothly, which protects sensor readings.

Replacement on a Tribeca is straightforward for a competent DIYer, but many owners prefer a workshop. There are two sensors (one per bank). A sensible approach:

1. Scan the vehicle for codes and use live data to confirm a sensor or wiring fault.
2. Rule out harness damage first, Subaru looms can chafe at the head/cover area.
3. Disconnect the negative battery terminal. Unplug the sensor, remove the retaining bolt, and gently twist-pull the old sensor out.
4. Lightly oil a new O‑ring, install the new genuine or high‑quality OEM‑equivalent sensor, and tighten the bolt to the service manual spec.
5. Clear codes and verify cam/crank synchronisation and AVCS operation on a road test.

Quality matters here. Genuine Subaru or proven OEM‑equivalent sensors tend to give stable signals, better sealing, and fewer comebacks. If the Tribeca is setting intermittent cam codes, a proper diagnosis beats guessing — scope testing, connector pin‑fit checks, and oil condition assessment can save replacing the wrong part.

FAQs

Where is the camshaft sensor on a 2008 Subaru Tribeca?
It’s mounted on each cylinder head at the front area — one sensor per bank. They read the trigger on the cam gear to inform the ECU of cam position for AVCS and injection timing. Access is from the engine bay, remove covers as needed.

How many camshaft sensors does a 2008 Tribeca have?
Two. One for the left bank and one for the right bank. Both are monitored by the ECU, a fault in either can cause starting issues, rough running, or AVCS performance problems.

Can you drive with a failing camshaft sensor?
You might, but it’s not wise. The Tribeca can stumble, lose power, and use more fuel. Prolonged driving may trigger limp behaviour and can mask other faults. Best bet is to diagnose and replace or repair promptly.