P0344 Code: Camshaft Position Sensor A Circuit Intermittent (Bank 1)
🟠 Moderate severity · drivable
Drivable, but the engine may stall or run rough when the signal drops, so fix it soon.
What P0344 means
The camshaft position sensor A on bank 1 is dropping its signal in and out. This sensor tells the computer where the camshaft is so it can time the fuel and ignition. An intermittent signal usually points to loose wiring, a bad connector, or a failing sensor.
Symptoms
- Check engine light is on
- Engine stalls or runs rough
- Hard starting
- Reduced power
Common causes
- most common: Loose or damaged wiring at the connector
- common: Faulty camshaft position sensor
- common: Corroded connector
- less common: Timing chain or belt issue
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Inspect and clean the sensor connector and wiring | Yes | $0–10 |
| Replace the camshaft position sensor | Yes | $50–150 |
| Repair damaged sensor wiring | Mechanic | $50–200 |
Frequently asked questions
Can I drive with a P0344 code?
Yes, but the engine may stall or run rough. Get it checked soon.
What is the most common cause of P0344?
Loose or damaged wiring at the camshaft sensor connector.
How much does it cost to fix a P0344?
Often just a connector cleanup; a new sensor runs about $50–$150.
Related codes
P0340
P0340 Code: Camshaft Position Sensor Circuit Malfunction
P0341P0341 Code: Camshaft Position Sensor A Circuit Range/Performance
P0342P0342 Code: Camshaft Position Sensor A Circuit Low Input (Bank 1)
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.