P0346Camshaft Position Sensor A Circuit Range/Performance Bank 2
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P0346 is the bank 2 counterpart of P0341: the intake camshaft sensor on the side without cylinder 1 delivers pulses, but their number or pattern does not fit the crankshaft. GM applies the same counting criteria as for P0341, e.g. on the 3.0 twin-turbo V6 (LGW): 4 to 6 pulses in the first 12 reference events and 398 to 402 per 100 engine cycles on the 4X wheel, set after two trips. On the Saab 9-4X V6 (GM LAU) the code means too many or too few pulses per crank revolution, or no correlation with crank position, for more than 1 s or 10 s cumulatively, also after two trips. Ford petrol engines do not use the code and report such faults under P0349. Result: cam timing on bank 2 switched off, loss of power, rough running.
- What you may notice
- Check engine light on
- Longer cranking before the engine starts
- Loss of power (cam timing held in its base position)
- Rough idle, occasionally stalling
- Likely causes
- LikelyBank 2 sensor with disturbed signal, air gap
- PossibleTone wheel on the bank 2 phaser damaged or wrongly fitted
- PossibleConnector, wiring or interference
- RareCrankshaft reference signal disturbed
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €40 – €500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.