P0346
Camshaft Position Sensor A Circuit Range/Performance Bank 2
Crank/cam position
Generic OBD-II
High
What it means
P0346 means the bank 2 camshaft position sensor signal is present but out of its expected range or not correlating with the crankshaft signal. The computer uses cam position for fuel injection and spark sequencing, so this can cause hard starting, hesitation, or stalling — commonly from wiring, the sensor, or worn cam timing.
High
Can I keep driving? Usually drivable, but the engine may hard-start, stall, or hesitate — repair it before it leaves you stranded.
Common symptoms
What you'll notice
- Check-engine light on
- Hard starting or longer cranking
- Rough idle, hesitation, or occasional stalling
- Reduced power (engine may drop to a limp/limited mode)
Common causes
Most likely first
- Faulty camshaft position sensor on bank 2Likely
- Corroded or loose connector at the sensorCommon
- Wiring fault (open, short, or intermittent) in the sensor circuitCommon
- Damaged cam reluctor/tone wheel, or worn timing chain/tensioner affecting cam timingLess often
- ECM fault (rare)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and inspect the bank 2 cam sensor connector and wiring.
- Compare the cam signal to the crank signal on a scan tool for correlation.
- Check for timing chain stretch or a damaged reluctor if the signal is erratic.
- Replace the camshaft position sensor if it is out of spec, then clear and re-test.
FAQ
Quick answers
Is it safe to drive with P0346?+
Short trips are usually possible, but a cam sensor that drops out can cause stalling or a no-start, so don't rely on the car until it's fixed.
Can I just clear P0346?+
It returns once the fault reappears. Repair the wiring, sensor, or timing issue first.
Related codes
Often seen with P0346
Read & clear P0346 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX