P0344: Camshaft Position Sensor A Circuit Intermittent Bank 1 or Single Sensor
Do not keep driving
Expect intermittent stumbling or stalling. Report when it happens — hot, cold, or over bumps — since that pattern is what makes an intermittent fault findable.
What this code means
The bank 1 camshaft signal is dropping out intermittently. Losing cylinder identification mid-run typically produces a stumble or a stall rather than an instant cut, since the module can often continue on the crankshaft signal — but it is still a fault worth resolving promptly. Heat and vibration at the sensor mounting are the usual contributors.
Likely causes
Start here
- Intermittent wiring fault · moderate
- Corroded or loose connector · easy
- Faulty camshaft position sensor · moderate
Less common
- Heat damage to sensor or wiring · moderate
- Chafed harness against engine or bracket · moderate
Symptoms
Components involved
Information, not instruction
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Community experience
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Nothing posted about this yet. Whatever you found is worth writing down — even a dead end saves someone the same afternoon.
What makes one worth reading:
- The car — make, model, year and engine. The same fault behaves differently on each.
- What you measured, not only what you replaced.
- What actually fixed it — or that nothing did, which is worth knowing too.
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