P0349

Camshaft Position Sensor A Circuit Intermittent Bank 2

Q: Is it safe to drive with P0349?

Use caution. Because the fault is intermittent, the car may stall without warning or refuse to restart. Have it diagnosed before depending on it for a trip.

Q: Can I just clear P0349?

Clearing hides it briefly, but an intermittent connection or failing sensor will set it again — and can strand you until repaired.

Camshaft position sensor Generic OBD-II High

What it means

P0349 means the camshaft position sensor signal on bank 2 is dropping out intermittently. The computer uses this signal to time spark and fuel injection, so an on-and-off fault can cause occasional stalling, hard starting, or brief hesitation. Because it's intermittent, it can be hard to catch but should be traced before it leaves you stranded.

High

Can I keep driving? Driveable but unpredictable — an intermittent cam signal can cause sudden stalling or a hard/no-start. Diagnose it before relying on the car.

Real-world scan data

Seen in

scans in the past year

Found in

<0.1%

of scans

<0.1%

of scans that found faults

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

Common symptoms

What you'll notice

Check-engine light on
Intermittent stalling or hard starting
Rough idle or brief hesitation while driving
Momentary loss of power that comes and goes

Common causes

Most likely first

Faulty or intermittently dropping camshaft position sensor (bank 2)Likely
Chafed, loose, or corroded wiring causing an intermittent openCommon
Poor or backed-out connection at the sensor connectorCommon
Damaged reluctor/tone wheel or debris near the sensor tipLess often
Failed ECM (rare — check the sensor and wiring first)Less often

How to diagnose & fix

Work through it in order

Read freeze-frame data to see the conditions when the fault dropped out.
Wiggle-test the sensor connector and harness with a scan tool watching the cam signal.
Inspect the connector and wiring for corrosion, chafing, or loose pins; check the sensor tip and air gap.
Test the sensor's signal, power, and ground while the fault is present if possible.
Replace the camshaft position sensor if intermittent, then clear and re-test.

FAQ

Quick answers

Is it safe to drive with P0349?+

Use caution. Because the fault is intermittent, the car may stall without warning or refuse to restart. Have it diagnosed before depending on it for a trip.

Can I just clear P0349?+

Clearing hides it briefly, but an intermittent connection or failing sensor will set it again — and can strand you until repaired.

Read & clear P0349 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX