AutoCodes - Buick - P0340 BUICK

P0340 BUICK Code - Camshaft Position Sensor 'A' Circuit Malfunction

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3
Table of contents

|P0340 BUICK code possible 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

|How do I fix the P0340 BUICK code?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|P0340 BUICK code tech notes

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

|Cost of diagnosing the P0340 BUICK code

Labor: 1.0

The cost of diagnosing the P0340 BUICK code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|When is the P0340 BUICK code detected?

The camshaft position sensor signal is not detected by the Engine Control Module(ECM) during the first few seconds of engine cranking

|What are P0340 BUICK code possible symptoms?

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

|P0340 BUICK code description

The Camshaft Position Sensor is an electronic device used in an engine to record the rate at which the camshaft is spinning. This information is used by the Engine Control Module(ECM) to control ignition and fuel injection. The camshaft position sensor senses the retraction of camshaft (intake) to identify a particular cylinder. The camshaft position sensor senses the piston position. The sensor system consists of a rotating part, typically a disc, as well as a static part, the actual sensor.
When the engine is running, the high and low parts of the teeth cause the gap with the sensor to change. The changing gap causes the magnetic field near the sensor to change. The change in the magnetic field cause the voltage from the sensor to change.
When the crankshaft position sensor (POS) system becomes inoperative, the camshaft position sensor provides various controls of engine parts instead, utilizing timing of cylinder identification signals.
OBDII Code P0340 Buick - Camshaft Position Sensor 'A' Circuit Malfunction - AutoCodes.com

|Need more information with the P0340 BUICK code?

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|P0340 BUICK code comments

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Repair Importance Level: 3
 
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Repair Difficulty Level: 2
 
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