P0341: Camshaft Position Sensor "A" Circuit Range/Performance (Bank 1 or Single Sensor)

What does P0341 mean?

The camshaft position sensor tells the ECM where the camshaft is, which it uses to time injection and spark. P0341 means the signal is present but not plausible, for example erratic or not matching the crankshaft signal.

Both references list the camshaft sensor and its wiring or connection as common causes, and note that a crankshaft position sensor fault can also trigger it.

Common symptoms

• Check engine light on
• Hard starting or no start
• Stalling
• Misfire or rough running
• Lower power or fuel economy

Common causes

The causes below are the ones commonly seen with P0341. The actual cause can vary by vehicle, engine and mileage, so treat this list as a starting point, not a diagnosis.

• A faulty camshaft position sensor
• Damaged wiring or an intermittent connection in the sensor circuit
• A faulty crankshaft position sensor
• Timing or reluctor wheel problems on some engines

What to check with a scanner

• Read all codes, including crank sensor and timing codes such as P0335 or P0016.
• Inspect the sensor connector and wiring for damage, oil contamination or a loose fit.
• Read freeze frame data to see rpm and temperature when the code set.
• Clear the code and see whether it returns.

How to read and clear P0341 with OBD Master Pro

1. Plug in your adapter. Connect a generic ELM327 (or ELM329) OBD2 adapter to the diagnostic port, usually under the dashboard on the driver's side. Bluetooth Classic, Bluetooth LE, Wi-Fi and USB OTG adapters are supported.
2. Switch the ignition on. Turn the key to ON or start the engine, depending on your car.
3. Connect in OBD Master Pro. Open the app, go to Connection and pick your adapter. Classic Bluetooth adapters connect from the Bluetooth tab, Bluetooth LE adapters from the BLE tab with no pairing needed. Use the generic OBD2 / EOBD profile or your car's brand profile.
4. Read the codes. Open the fault codes screen to see stored, pending and permanent codes. Confirm P0341 is listed and note any other codes, since they often explain the cause.
5. Check the details. Look at freeze frame data, Live data and, where your car supports it, Mode 06 test results (see the checks above).
6. Fix, then clear. After the repair, clear the codes to turn off the check engine light. Clearing also resets the emissions readiness monitors, so drive normally and check the readiness screen before any inspection. Permanent codes cannot be erased with a scan tool; they clear on their own once the car's self test passes.

Tip: you can also look up P0341 and other codes in the app's DTC search without connecting to a car. If your adapter will not connect, use Connection > Share connection log and email it to support. Many cheap ELM327 clones only handle basic engine OBD2, which is all you need for P0341.

When to see a mechanic

Get professional help if any of these apply:

• The engine will not start
• The code returns after replacing the sensor
• Timing needs checking

If you are unsure, a qualified technician can confirm the cause with tests such as smoke testing, pressure testing or scope readings. Clearing a code does not repair the fault.

Related trouble codes

See all OBD2 trouble code guides

Related guides

Check engine light on: what to do · How to read an OBD2 code (P, B, C, U) · Stored, pending and permanent codes and freeze frame · OBD2 readiness monitors explained · OBD2 glossary · OBD2 by car brand