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P0340: Camshaft Position Sensor Circuit Malfunction
The camshaft position sensor signal is missing or out of spec.
Medium Severity
$150 – $600
Can I Keep Driving with Code P0340?
Sometimes the car runs, sometimes it will not start. Get it fixed promptly.
What P0340 Means
The cam sensor tells the computer which stroke each cylinder is on so injectors fire at the right time. P0340 usually points to a failed sensor or wiring problem.
Common Causes
Diagnostic Tips
- Sensor itself is usually inexpensive but accessibility varies.
- If a stretched timing chain is the root cause, do not just replace the sensor.
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Get My Free EstimateFrequently Asked Questions
Can a bad cam sensor cause no-start?
Yes. Without the cam signal, the computer may refuse to fire injectors.