2023 Chevrolet P0340: What It Means & Is It Safe to Drive?
P0340 on the 2023 Chevrolet: 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.
PowertrainHigh urgency
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 2023 Chevrolet
- 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 2023 Chevrolet, repairs for P0340 typically fall between $100 and $500, depending on the root cause and labor rates in your area.
Known issues on Chevrolet
GM P0340 on LS V8 engines is commonly a failed crankshaft/camshaft reluctor ring or CMP sensor. On LS engines with active fuel management (AFM), the cam phaser can also trigger this code—verify oil pressure is adequate before condemning the sensor.
Most commonly affected models
Silverado 2007–2014Tahoe 2007–2014Malibu 2008–2013