What is OBD2 scanner code P0341?

P0341 means the Camshaft Position Sensor A circuit (Bank 1 or a single sensor) is reporting a range or performance fault.

In practical terms, the engine control unit (ECU) is not receiving a stable camshaft position signal from the CMP sensor. This can affect ignition timing and fuel delivery, leading to symptoms like hard starting, rough idle, misfires, or stalling depending on the vehicle.

What P0341 covers

Code P0341 is triggered when the PCM detects the camshaft position signal from sensor A is out of range or not behaving as expected. The exact location of Sensor A depends on the engine design (Bank 1 or single-circuit configuration). Reliable CMP signals are crucial for proper timing and synchronizing fuel injection with valve events.

Common causes

Common causes fall into a few broad categories: sensor faults, electrical problems, and timing or mechanical issues. The list below covers the most frequent sources technicians encounter.

• Faulty camshaft position sensor (CMP sensor) or its reluctor ring



• Wiring harness shorts, opens, or insulation damage in the CMP circuit


• Timing belt/chain is stretched, slipped, or mis-timed


• Oil leaks or contamination affecting the CMP sensor or timing components


• PCM/ECU software issues or incorrect calibration


• Low battery voltage or poor electrical supply causing intermittent sensor readings

Issues can mimic other problems, so a methodical diagnostic approach helps pinpoint the root cause rather than jumping straight to sensor replacement.

Typical symptoms

Vehicles with P0341 may display a mix of the following signs, though not all will occur in every case:

• Check Engine Light (CEL) or Malfunction Indicator Lamp (MIL) illuminated


• Hard starting or no-start conditions


• Rough idle or engine misfires


• Loss of power or stalling under load


• Erratic or fluctuating engine timing symptoms

Because P0341 can be caused by several issues, the observed symptoms help guide the diagnostic path but are not a definitive diagnosis on their own.

Diagnostic approach

Professionals typically follow a structured sequence to verify P0341 and identify the root cause. The steps below describe a common, manufacturer-agnostic approach.

1. Use an OBD-II scanner to confirm the code and view freeze-frame data for context (engine RPM, load, airflow, etc.).


2. Visually inspect the CMP sensor and its wiring/connectors for damage, corrosion, oil contamination, or loose connections.


3. Check the CMP circuit’s power, ground, and signal with a multimeter or oscilloscope. Verify the 5V reference, ground integrity, and the signal waveform when cranking or running.


4. Inspect the timing system (belt/chain, sprockets, timing marks) for wear, stretch, or mis-timing. Adjust or replace as needed if timing is off.


5. Look for related codes (e.g., P0340, P0335, P0336) that might indicate a related sensor or circuit issue.


6. Rule out external factors such as oil leaks, moisture, or contamination that could affect the CMP sensor.


7. If sensor and wiring tests are clean but the issue persists, consult the manufacturer’s service bulletin; a PCM software update or reprogram may be advised.

A careful diagnosis helps avoid unnecessary repairs and ensures the root cause is addressed to prevent recurrence.

Repair options

Repairs depend on the confirmed cause and may range from simple replacements to more involved timing work or wiring repairs.

• Replace the camshaft position sensor if it is faulty or out of range.


• Repair or replace damaged wiring or connectors in the CMP circuit; fix any shorts or opens.


• Repair or replace the reluctor ring if damaged, or correct sensor alignment as required by the design.


• Repair or re-time the engine if the timing belt/chain has slipped, stretched, or is out of alignment.


• Address oil leaks or contamination that could affect the sensor or timing components.


• Apply manufacturer-recommended PCM software updates or reprogramming if instructed by the vehicle maker.

After repairs, clear the codes and conduct a road test to confirm the P0341 code does not return and that engine performance is restored.

Considerations for drivers

P0341 is a signal that the engine’s camshaft timing reference is not being read reliably. Because the cause can vary from a simple sensor fault to a timing issue, it is wise to perform diagnosis with the vehicle’s service manual or a qualified technician. Driving with an unresolved P0341 can lead to reduced performance, higher emissions, or potential engine damage if timing is significantly affected.

Summary

P0341 is an OBD-II diagnostic trouble code indicating a problem with the Camshaft Position Sensor A circuit's range or performance (Bank 1 or single sensor). Common causes include a faulty CMP sensor, wiring/connectors problems, and timing-related issues. Diagnosis involves confirming the code, inspecting the CMP circuit, testing signals, and checking timing. Repairs vary from sensor replacement to wiring repair or timing component service. If you encounter P0341, plan a systematic diagnostic with professional guidance to determine the precise fix.

How serious is a P0341 code?

The importance of addressing P0341
A malfunctioning sensor can disrupt fuel delivery and ignition timing, leading to poor performance and potential engine damage. If left unaddressed, it can cause increased fuel consumption, difficulty starting the vehicle, and even engine failure.

Can you drive with a faulty camshaft position sensor?

No, you should not drive with a bad camshaft position sensor, as it is not recommended and can cause safety hazards and costly engine damage. While the car may still run, it can stall unexpectedly, leading to accidents, and may also experience performance issues like rough idling, power loss, and poor fuel efficiency. Continued driving can also lead to more expensive problems like damage to the catalytic converter or internal engine components. 
You can watch this video to learn more about the potential consequences of driving with a bad camshaft position sensor: 58sAuto Repair GuysYouTube · Aug 11, 2022
Reasons not to drive:

• Risk of stalling: The engine can stall without warning, which is especially dangerous in traffic or at high speeds. 
• Poor engine performance: Expect issues like rough idling, misfires, loss of power, and increased fuel consumption. 
• Potential for serious damage: Unburnt fuel can enter the exhaust system and damage the catalytic converter, and prolonged driving can also cause more severe internal engine damage. 
• Starting issues: The car may have trouble starting, or it may not start at all. 
• Unpredictable behavior: The car's behavior can be erratic and unpredictable, making it unsafe to drive. 

How do you fix the code P0341?

To fix a P0341 code, first check the camshaft position sensor (CPS) for damage and test its wiring for opens, shorts, or a lack of power and ground. If the sensor and wiring are functional, the problem may be a more complex issue, such as a slipped timing belt/chain or a faulty Powertrain Control Module (PCM), requiring further diagnosis by a professional. 
1. Inspect the sensor and wiring 

• Visual inspection: Look for physical damage to the sensor, the connector, and the wiring harness. Check for signs of overheating, particularly where the harness runs near the exhaust. 
• Check for loose connections: Ensure the electrical connector is securely plugged into the sensor and that there are no signs of corrosion or dirt inside the connector pins. 
• Look for blown fuses: The sensor may have a fuse in the engine bay or under the dashboard that could be blown due to a short in the circuit. 

This video demonstrates how to visually inspect the camshaft position sensor and its wiring: 38sWeeklyToolsYouTube · May 19, 2024
2. Test the sensor and circuit 

• Test the sensor: Use a multimeter to check the sensor's resistance against your vehicle's specifications. If it doesn't read within the correct range, it needs to be replaced. 
• Test the wiring: With the ignition on, use a multimeter to check for 555 volts power, a good ground, and signal voltage at the sensor's connector. 
• Test the signal wire: You can also test the signal wire for proper operation using an oscilloscope or by checking for voltage changes as the engine runs. A consistent or erratic signal can indicate a faulty sensor or wiring issue. 

You can watch this video to learn how to test the camshaft position sensor circuit with a multimeter: 43sFour Wheels EmpireYouTube · Sep 19, 2024
3. Address underlying issues 

• Replace the sensor: If the sensor fails the tests, replace it. Make sure the O-ring from the old sensor is not left behind in the engine, and be aware that some vehicles may require a "relearn" procedure after replacement, says this YouTube video. 
• Repair wiring: If the wiring is damaged, repair or replace the affected sections. Heat-resistant sleeving can be used to protect the harness from future heat damage. 
• Check engine timing: If the sensor and wiring are confirmed to be working correctly, the issue may be with the engine's timing. Check if the timing belt or chain has slipped, as this can cause the sensor to send an incorrect signal. 
• Consider other components: In rare cases, the PCM or a damaged reluctor wheel on the camshaft could be the cause. If the previous steps don't resolve the code, a professional diagnosis is recommended. 

This video explains what a reluctor wheel is and how it relates to the P0341 code: 59sCar FixYouTube · Apr 21, 2025
4. Clear the code

• Use an OBD-II scanner: After performing the repair, use an OBD-II scanner to clear the P0341 trouble code. 
• Drive the vehicle: Take the car for a test drive to ensure the code does not return. 

How much does it cost to replace a camshaft position sensor?

The total cost to replace a camshaft sensor typically ranges from $185 to $650, but can vary based on vehicle type and labor rates. The cost is a combination of parts and labor, with the part usually costing between $20 and $150 and labor costing between $80 and $500+ depending on accessibility and shop rates. 
Cost breakdown

• Parts: The camshaft sensor itself is relatively inexpensive, usually costing between $20 and $150. 
• Labor: Labor costs can vary significantly. Shops typically charge an hourly rate and the time to replace the sensor can be under an hour for simple jobs, or up to two hours or more for more difficult-to-reach sensors. 
• Diagnosis: Some shops may charge a separate diagnostic fee, which can range from $120 to $200, but this fee is often applied to the total repair cost if you proceed with the service. 
• Vehicle Type: The final cost will depend on your car's make, model, and year. Luxury or more expensive vehicles may have higher parts costs and labor rates, increasing the overall price. 

How to save on replacement costs

• Get multiple quotes: Contact both independent mechanics and dealerships to compare prices for both parts and labor. 
• Do it yourself: If you are comfortable with car maintenance, replacing the sensor can save you the cost of labor, as it can be a straightforward job. 
• Use the right parts: Some recommend using Original Equipment Manufacturer (OEM) or Tier-1 (Bosch, Denso, Delphi) parts to avoid future issues, especially for critical sensors.