Nissan Error Code P0340: How to Fix It

Medium 1-2 hours High Severity Verified June 2026
Error Code
P0340
Brand
Nissan
Product Type
automotive
Severity
High
DIY Difficulty
Medium
Estimated Fix Time
1-2 hours
Nissan error code P0340 indicates a malfunction in the camshaft position sensor circuit, which monitors the position and rotation speed of the camshaft. This sensor is crucial for proper engine timing and fuel injection, so this error can cause rough idling, stalling, and poor performance.
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Tools You'll Need

How to Fix Error Code P0340

  1. Safety Preparation

    Engine components may be hot. Always disconnect negative battery terminal before working on electrical components.
  2. Scan for Additional Codes

  3. Locate Camshaft Position Sensor

  4. Inspect Wiring and Connections

    Do not force electrical connectors as pins can break easily.
  5. Test Sensor Voltage

    Keep hands and tools away from moving engine parts while testing.
  6. Check Sensor Resistance

  7. Remove and Inspect Sensor

    Note sensor orientation before removal for proper installation of replacement.
  8. Install New Sensor

    Do not over-tighten mounting bolt as this can crack the sensor housing.
  9. Clear Codes and Test

Parts You May Need

Camshaft position sensor
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Electrical contact cleaner
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Camshaft position sensor
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Electrical contact cleaner
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Camshaft position sensor
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Electrical contact cleaner
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Camshaft position sensor
Check Price on Amazon
Electrical contact cleaner
Check Price on Amazon
Camshaft position sensor
Check Price on Amazon
Electrical contact cleaner
Check Price on Amazon
Camshaft position sensor
Check Price on Amazon
Electrical contact cleaner
Check Price on Amazon
Camshaft position sensor
Check Price on Amazon
Electrical contact cleaner
Check Price on Amazon
Camshaft position sensor
Check Price on Amazon
Electrical contact cleaner
Check Price on Amazon
Camshaft position sensor
Check Price on Amazon
Electrical contact cleaner
Check Price on Amazon
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When to Call a Professional

Call a professional mechanic if you find multiple related codes (P0341, P0342, P0343), if the timing chain/belt appears damaged, if you're uncomfortable working with electrical systems, or if the problem persists after sensor replacement. Internal engine timing issues require professional diagnosis and may indicate costly engine damage.

Frequently Asked Questions

What causes Nissan P0340 error code?
P0340 is most commonly caused by a faulty camshaft position sensor, damaged wiring harness, corroded electrical connections, or timing chain/belt issues. Oil contamination of the sensor and metal debris can also trigger this code.
Can I drive with P0340 code on my Nissan?
You should avoid driving with P0340 as it can cause engine stalling, rough idling, and potential engine damage. The engine may run poorly or fail to start. Get it diagnosed and repaired as soon as possible.
How much does it cost to fix P0340 on a Nissan?
Camshaft position sensor replacement typically costs $150-$350 for parts and labor. If timing chain issues are involved, costs can range from $800-$2500. DIY sensor replacement costs $50-$120 for the part alone.
How do I know if my camshaft position sensor is bad?
Symptoms include engine stalling, rough idle, poor acceleration, difficulty starting, and the check engine light. You may also notice engine misfires or complete failure to start in severe cases.
Where is the camshaft position sensor located on a Nissan?
Location varies by model, but it's typically found near the timing cover, cylinder head, or upper engine area. Common locations include near the valve cover, timing chain housing, or intake manifold area. Check your owner's manual for the exact location.