P0344 Camshaft position sensor A circuit intermittent (bank 1 or single sensor)
What P0344 means
The engine computer has seen the signal from camshaft position sensor A on bank 1 cut out or become erratic for short periods. Each drop-out can cause a stumble, and the engine may stall or be slow to restart.
P0344 is a generic SAE J2012 code: it means the same on every make. The exact cause still depends on the car, so read the freeze-frame data before replacing parts.
At a glance
- Severity
- High
- Typical repair cost
- 60–500 €
- Workshop time
- 0.5–2.5 h
- Repair difficulty
- Medium
- DIY possible
- Yes
- Check engine light
- Yes
- Affects emissions test
- Yes
Parts and labour at an independent workshop in Europe. Main dealers charge more; the cause decides the bill, not the code.
Symptoms
- Check engine light on
- Long cranking or hard starting
- Rough idle or stalling
- Power loss, especially in the mid-rpm range
- Higher fuel consumption
Common causes
- Loose or corroded connector
- Chafed or broken wire making intermittent contact
- Failing camshaft position sensor, often when hot
- Damaged target wheel or debris on the sensor tip
Can I keep driving with P0344?
Get it checked within a few days. Intermittent drop-outs can cause stalling without warning.
What to check first
- Check the connector for loose terminals and oil contamination; clean and reseat it.
- Wiggle the harness with the engine idling while watching for drop-outs or stumbling.
- Inspect the sensor tip and target wheel.
- Replace the sensor if the wiring holds up, especially if the fault appears when the engine is hot.
Related codes
- P0343 Camshaft position sensor A circuit high (bank 1 or single sensor)
- P0345 Camshaft position sensor A circuit (bank 2)
- P0342 Camshaft position sensor A circuit low (bank 1)
- P0346 Camshaft position sensor A circuit range/performance (bank 2)
- P0341 Camshaft position sensor A circuit range/performance (bank 1)
- P0340 Camshaft position sensor A circuit (bank 1 or single sensor)
- P0351 Ignition coil A primary control circuit/open
- P0352 Ignition coil B primary control circuit/open
Data: TORKO fault-code catalogue, built on OBDex (CC0-1.0) and reviewed against workshop practice. Informational only — it does not replace a diagnosis by a mechanic.
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