Parts for your 2006 Subaru Tribeca-Camshaft sensor

2006 Subaru Tribeca Camshaft Sensor — What It Does and When to Replace It

The 2006 Subaru Tribeca absolutely uses camshaft position sensors. Subaru’s factory literature lists them clearly: the B9 Tribeca (MY2006) with the EZ30 H6 engine runs one camshaft position sensor on each cylinder bank. Technical sources for this include the Subaru B9 Tribeca 2006 Service Manual (Engine Diagnostics sections for DTC P0340/P0345 Camshaft Position Sensor Circuit Bank 1/Bank 2) and the engine control wiring diagrams for the H6. Subaru’s OEM parts catalogue also shows two individual camshaft sensors (LH and RH) for this model and engine.

On this H6, the camshaft sensors feed the ECM precise cam phase information so the car can run sequential fuel injection, manage AVCS (variable valve timing), and coordinate spark with the crank signal. If a sensor goes out, the Tribeca can be hard to start, run rough, drop into a reduced-power strategy, or in some cases not start at all. Common fault codes are P0340 (Bank 1) and P0345 (Bank 2).

Location-wise, each sensor lives at the rear of its respective cylinder head, near the firewall, under the plastic engine cover. They’re solid-state, so there’s no scheduled replacement interval—most live a long, quiet life. That said, age, heat, oil intrusion at the connector, or wiring fatigue can cause intermittent hot-stall or no-start problems.

For servicing, a sensible approach is:

• Scan for codes and live data, confirm cam/crank sync and which bank is affected.
• Inspect the connectors for oil, corrosion, or broken locking tabs, clean and reseat.
• Check harness routing and continuity if faults persist.
• If replacing, use a genuine or high-quality OEM-equivalent sensor and a fresh O-ring.

Replacement is straightforward for a competent home mechanic: remove the engine cover and intake ducting for access, disconnect the battery, unplug the sensor, remove the single retaining bolt, swap the O-ring (lightly oil it), fit the new sensor, and tighten the bolt snugly to the factory spec from the service manual. Clear codes with a scan tool and confirm stable idle and proper AVCS operation on a short test drive. Given there are two sensors, make sure you’re replacing the correct bank to avoid double handling.

Technical references: Subaru B9 Tribeca MY2006 Service Manual (Engine/H6 Diagnostics for DTC P0340 and P0345, Engine Control System wiring diagrams), and Subaru OEM parts catalogue listings for “Camshaft Position Sensor LH/RH” for EZ30.

FAQs

Where is the camshaft sensor on a 2006 Subaru Tribeca?
There are two—one on each cylinder bank. They’re mounted at the rear of the cylinder heads, near the firewall, beneath the plastic engine cover. A quick look from the top, after removing the cover and intake snorkel, usually reveals the retaining bolt and connector.

Access can be a bit tight, a small ratchet and patience help. Always check the connector for oil or corrosion before condemning the sensor.

What are the symptoms of a failing camshaft sensor on the Tribeca?
Typical signs include hard starting, rough idle, hesitation, sudden stalling when hot, and poor fuel economy. The check engine light often flags P0340 (Bank 1) or P0345 (Bank 2). On this H6, AVCS control can also suffer, so it may feel flat or inconsistent under load.

Intermittent faults are common—if it plays up when hot, that’s a classic clue.

Can a camshaft sensor be cleaned or does it have to be replaced?
They’re sealed electronic sensors, so “cleaning” the sensor itself rarely fixes a genuine internal failure. However, cleaning the connector, reseating it, and replacing an oil-swollen O-ring can resolve poor contact issues.

If codes and symptoms persist after connector and wiring checks, replacement with a quality sensor is the reliable fix.