P0344

Camshaft Position Sensor A Circuit Intermittent (Bank 1 or Single Sensor)

Car Fault Codes Ignition & misfire

Can you still drive? With care, short trips only

Who can fix it? DIY with some experience

Typical repair time 30 minutes – 2 hours

Typical cost SAR 100 to 600

What it means

The engine computer has seen the signal from camshaft position sensor A drop out briefly and then return. The cause is usually an unstable electrical connection affected by heat or vibration, which can cause stumbling or sudden stalling.

Symptoms4

Check engine light that comes and goes.
Sudden stalling, with the engine restarting after a short wait.
Momentary stumble or jerk while driving.
Long cranking when the engine is hot.

Possible causes6

Loose connector or a terminal that does not grip properly.
Cracked or chafed wire that opens with engine vibration.
Sensor that fails when hot and recovers after cooling.
Oil or moisture inside the connector.
Metal debris stuck on the sensor tip.
Weak shared engine ground.

How to diagnose5

Review the freeze frame data to see engine temperature and speed when the fault occurred.
Watch the sensor signal on a scan tool or oscilloscope while gently moving the wiring and connector with the engine running.
Inspect the connector for loose terminals or oil, and test terminal grip.
Drive the vehicle to full operating temperature; if the fault appears only when hot, suspect the sensor first.
Inspect the sensor tip and the engine ground point.

How to fix5

Clean the connector and repair loose terminals or replace the connector.
Repair cracked wiring and secure the harness away from vibration and heat.
Clean debris from the sensor tip and fix any oil leak reaching it.
Replace the sensor if it is proven to fail when hot.
Clear the codes and road test under the same conditions that set the code.

Repair cost

0–500

500–2,000

2,000–5,000

5,000+

In Saudi riyals; the highlighted part is the expected range for this fault.

The fix is often a connector or wire at low cost, but intermittent faults can take longer to diagnose, and the cost rises when the sensor is replaced.

Prices are rough estimates for common cars at independent workshops and vary with the car and the source of the part.
Prices last updated: September 2026

Frequently asked questions

Why does the code come and go?

Because the fault is momentary, such as a loose terminal losing contact with vibration or a sensor that fails only when hot, so the car may seem normal during testing.

Is sudden stalling dangerous?

Yes. When the engine stalls while driving, steering and braking can become heavy on some vehicles, so do not delay the repair.

Was this explanation helpful?

Tap the stars to rate; you can change it later.

This guide is for information only and does not replace an inspection by a qualified technician. If the fault involves brakes, steering, engine temperature, electrics or refrigerant, do not attempt the repair yourself.

Report a mistake

Spotted something inaccurate? Tell us and we will review and correct it.