What does code P0340 mean on a Nissan and is it safe to drive?
P0340: Camshaft Position Sensor Circuit Malfunction. Here's what it means on your Nissan, 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 Nissan
- 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 Nissan, 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 Nissan
Nissan VQ35DE has two cam sensors; P0340 (bank 1) is often the CMP sensor on the timing cover side. The wiring harness can chafe and short on the VQ—inspect the harness routing carefully before replacing the sensor.
Most commonly affected models
Altima 2002–2008Maxima 2004–2008Pathfinder 2005–2010