2015 Subaru P0340: What It Means & Is It Safe to Drive?
P0340 on the 2015 Subaru: Camshaft Position Sensor Circuit Malfunction. Here's what it means, what usually causes it, what repairs typically cost, and whether it's safe to keep driving.
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What this code means
The PCM is not receiving a valid signal from the camshaft position sensor. Affects ignition timing and fuel injection.
Common causes on the 2015 Subaru
- Failed camshaft position sensor
- Wiring or connector issue
- Timing chain/belt misalignment (less common)
Symptoms
- Check Engine Light
- No start or hard start
- Rough run, stalling
- Reduced power
Typical fixes
- Replace camshaft position sensor
- Repair wiring/connector
- Verify timing if sensor replacement doesn't fix
Repair cost range
For a 2015 Subaru, repairs for P0340 typically fall between $100 and $500, depending on the root cause and labor rates in your area.
Known issues on Subaru
Subaru EJ engines see P0340 from CMP sensor failure or timing belt component wear on belt-driven models. On chain-driven FA/FB engines, verify the VVT system oil passages are not restricted before replacing the sensor.
Most commonly affected models
Outback 2005–2012Forester 2006–2013Impreza 2008–2014