Possible causes
- Faulty Camshaft Position Sensor into the distributor
- Camshaft Position Sensor harness is open or shorted
- Camshaft Position Sensor circuit poor electrical connection
Tech notes
Sometimes and in some models, low battery voltage or a weak starter can can trigger a Camshaft Position Sensor code.
When is the code detected?
The camshaft position sensor signal is not detected by the Engine Control Module(ECM) during the first few seconds of engine cranking
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Lack/Loss of Power
- Engine Stall
P0340 1997 Toyota Corolla Description
The Camshaft Position Sensor (G Signal) consist of a signal plate and pickup coil.
The G signal plate had one tooth on its outer circumference and is built into the distributor. When the camshaft rotate, the protrusion on the signal plate and the air gap on the pickup coil change, causing fluctuations in the magnetic field and generating an electromotive force in the pickup coil.
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