P0340
09-24-2009, 04:42 PM
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P0340
P0340
Description
Camshaft Position Sensor Circuit
DTC P0340 will set if Camshaft Position (CMP) sensor pulses
are not in proper ratio to 18X and 3X pulses.
Symptoms
These codes are a bit more tricky to track down.
Description
Camshaft Position Sensor Circuit
DTC P0340 will set if Camshaft Position (CMP) sensor pulses
are not in proper ratio to 18X and 3X pulses.
Symptoms
- Hard starting/no start
- Rough running or misfiring
- Loss of engine power, sluggishness.
- Damaged wire or connector in the circuit.
- Failed camshaft position sensor.
- Failed crankshaft position sensor.
These codes are a bit more tricky to track down.
- Inspect all the wiring and connectors in the circuit
- Use a multimeter to check for continuity in the circuit wiring
- Check for 5 volts at sensor
- Remove CMP sensor, leaving harness connector connected.
Place a magnet on sensor. If voltage is now about zero volts sensor is good - Check for incorrect harness routing near secondary
ignition components, ignition coil arcing to wiring harness or ICM.
Check ignition coils for cracks, carbon tracking or other signs of
damage. - Replace circuit wiring and/or connectors as required
- Replace CMP sensor.
