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P0340 Chevrolet Code - Camshaft Position Sensor Circuit

- Code Popularity: 160,392 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
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What are the Possible Causes of the DTC P0340 Chevrolet?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Camshaft Position Sensor
  • Camshaft Position Sensor harness is open or shorted
  • Camshaft Position Sensor circuit poor electrical connection
  • Faulty starter motor
  • Starting system circuit
  • Dead (Weak) battery
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How to Fix the DTC P0340 Chevrolet?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

On some Chevrolet models, the camshaft position sensor is part Ignition Control Module (ICM) (aka igniter)









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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0340 Chevrolet code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Lack/Loss of Power
  • Engine Stall

Code P0340 Chevrolet Description

The Camshaft Position Sensor detects magnetic flux changes between the four narrow and wide tooth slots on the reluctor wheel. The Camshaft Position Sensor provides a digital ON/OFF DC voltage of varying frequency for each camshaft revolution. The Engine Control Module (ECM) will recognize the narrow and wide tooth patterns to identify the camshaft position, or which cylinder is in compression, and which is in the exhaust. The information is then used to determine the correct time and sequence for fuel injection and ignition spark events.
The ECM also has a dedicated replicated Camshaft Position Sensor signal output circuit that may be used as an input signal to other modules for monitoring engine RPM.
The Diagnostic Trouble Code (DTC) will be set when the ECM does not receive a signal from the Camshaft Position Sensor during 200 engine revolutions.

OBDII Code P0340 Chevrolet - Camshaft Position Sensor Circuit - AutoCodes.com
P0340 Chevrolet Code - Camshaft Position Sensor Circuit

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Code P0340 Chevrolet comments

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