Parts for your 2012 Subaru Tribeca-Camshaft sensor

2012 Subaru Tribeca Camshaft Sensor – purpose, faults and service advice

Based on technical references including the 2012 Subaru Tribeca factory service manual (Engine Diagnostics section), Subaru OBD-II DTC listings, and the OEM parts catalogue, this model absolutely uses camshaft position sensors. The EZ36 3.6-litre flat-six in the Tribeca is fitted with two camshaft position sensors (one on each cylinder bank). The engine control module relies on these sensors for synchronising fuel injection and spark with the crank sensor, and for controlling AVCS (Subaru’s variable cam timing). Relevant fault codes noted by Subaru include P0340–P0344 and P0345–P0349 for camshaft position circuitry and signal performance.

For Tribeca owners, the camshaft sensor is a small but critical bit of kit. It watches the cam’s exact position so the ECU knows when each cylinder is on the right stroke. On this EZ36, it also helps the ECU trim cam advance and retard, which affects torque delivery, emissions, and fuel economy. When a sensor goes crook, the ECU can’t confidently time spark or fuel, and AVCS control can get patchy.

Typical giveaway symptoms include a hard start when hot or cold, intermittent stalling at idle, a rough or hesitant take-off, noticeable loss of grunt, worse fuel use, and the check engine light. Scan tools commonly show the cam sensor codes above, and may also flag AVCS performance codes (like P0011/P0021) when the ECU sees timing that doesn’t line up with expectations.

These sensors aren’t a routine replacement item, they’re normally changed when faulty. As part of regular servicing, it’s smart to:

• Keep engine oil fresh and the correct grade — poor oiling can cause timing control issues that look like sensor faults.
• Inspect the sensor connectors and harness runs on both banks for heat-hardening, oil intrusion or loose pins.
• If any top-end work is done, confirm connectors are clipped home and wiring is routed clear of the exhaust and moving parts.

Replacement is straightforward for most workshops: disconnect the battery, unplug the sensor, remove its retaining bolt, twist and withdraw the sensor, lightly oil the new O-ring, refit and reconnect. After replacement, clear codes, check live cam/crank synchronisation, and road test. If a fresh sensor doesn’t fix things, look at the crank sensor, AVCS oil control solenoids, oil pressure/condition, and timing chain condition before calling it a day.

Location-wise, each camshaft sensor sits on the rear of its respective cylinder head. Access is from the top under the bonnet, a small socket and a gentle hand do the trick. Quality OEM-equivalent parts and a new O-ring are worth it to keep the Tribeca running sweet across Aussie and Kiwi roads.

Popular questions

Where are the camshaft sensors on a 2012 Subaru Tribeca?
They’re mounted at the rear of each cylinder head, one per bank. Lift the engine cover, look toward the firewall at the ends of the heads, and you’ll find a small sensor with a single retaining bolt and a two- or three-pin connector. Access is usually from above with basic hand tools.

What fault codes point to a bad camshaft sensor on a Tribeca?
Common cam sensor trouble codes include P0340–P0344 (bank 1) and P0345–P0349 (bank 2). You might also see AVCS performance codes (such as P0011 or P0021) if the ECU can’t reconcile expected cam timing with the actual signal. Always verify wiring integrity and oil condition before condemning the sensor.

Is it safe to drive with a failing camshaft sensor?
Short trips to a workshop are usually fine, but extended driving isn’t wise. A dodgy signal can cause poor running, increased fuel use, or occasional stalling. If the engine enters a limp mode or starts cutting out, it’s best to park it and arrange a repair rather than risk being stranded.