P0341Camshaft Position Sensor A Circuit Range/Performance Bank 1 or Single Sensor
- 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
- P0341 means the intake camshaft sensor of bank 1 (or the only cam sensor) delivers pulses, but their number or pattern does not fit the crankshaft. GM counts the pulses while the crank is in sync: 4 to 6 in the first 12 reference events and 398 to 402 per 100 engine cycles on the 4X wheel of the cam phaser; outside that in 8 of 10 checks the code is set after two trips. Ford's 2023 diesel compares the detected segment profile of the cam wheel with the expected one (1.2 s); the Saab 9-4X V6 checks pulses per crank revolution and correlation with crank position. Ford petrol engines use P0344 instead. Result: cam phase uncertain, cam timing switched off, possibly hard starting. GM names corroded connectors at the timing cover as a sporadic cause (PIP5335C).
- 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
- LikelySensor with interference pulses or weak signal, air gap
- PossibleTone wheel on the phaser damaged or wrongly fitted
- PossibleConnector or wiring fault (corrosion, interference)
- RareCrankshaft signal disturbed (wrong reference)
- 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.