Damaged or dirty reluctor ring on the camshaft.It is difficult to determine which of these is the source of the problem without specialized knowledge. There are many potential causes of code P0340. When the trouble code P0340 is set, the ignition spark and fuel injector timing fail due to the engine not knowing when to fire these components. The ECM uses this information to control ignition spark and fuel injector timing. It works hand in hand with the reluctor ring that creates a square wave voltage signal that the ECM interprets as the crankshaft position. The camshaft position sensor located in the internal combustion engine monitors the position and rotational speed of the camshaft. It is extremely important to repair code P0340 as soon as possible. It is possible for more damage to occur inside the engine of the vehicle if disregarded for an extended time period. Diagnosis: The vehicle may be difficult to start and the driver may also experience a lack of power when driving.Repair Urgency: Fix this code immediately (same-day if possible) to avoid internal engine damage.Issue Severity: SEVERE – Stop driving immediately.
P0340 definition : Camshaft Position Sensor Circuit Malfunction.
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