What does code P0340 mean on a Volvo and is it safe to drive?
P0340: Camshaft Position Sensor Circuit Malfunction. Here's what it means on your Volvo, what usually causes it, what repairs typically cost, and how safe it is 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 for your Volvo
- 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 Volvo, repairs for P0340 often fall between $100 and $500, depending on the cause and whether you use OEM or aftermarket parts. Labor rates vary by location.
Known issues on Volvo
Volvo P0340 cam position sensor fault on B5254T and B6294T is typically a failed sensor. On B5254T engines, also inspect the timing belt and cam trigger ring—a damaged timing belt or slipped cam sprocket can produce a P0340 that looks like sensor failure.
Most commonly affected models
S60 B5254T 2001–2009XC90 B6294T 2003–2014