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." property="og:description">

For Shop Owners

P0340 - Camshaft Position Sensor 'A' Circuit Malfunction

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3 What does this mean?

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
What does this mean?

Tech notes

Sometimes and in some models, low battery voltage or a weak starter can trigger a Camshaft Position Sensor code.
What does this mean?

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 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 - Camshaft Position Sensor 'A' Circuit Malfunction - itimaster.ru

P0340 Information for specific makes

P0340 ACURA Camshaft Position Sensor No Signal
P0340 AUDI Camshaft Position Sensor
P0340 BMW Camshaft Sensor Inlet Signal
P0340 BUICK Camshaft Position Sensor 'A' Circuit Malfunction
P0340 CHEVROLET Camshaft Position Sensor 'A' Circuit Malfunction
P0340 CHRYSLER Camshaft Position Sensor Circuit Bank 1 Sensor 1
P0340 DODGE Camshaft Position Sensor Circuit Bank 1 Sensor 1
P0340 FORD Camshaft Position Sensor Circuit Bank 1 Sensor 1
P0340 GMC Camshaft Position Sensor 'A' Circuit Malfunction
P0340 HONDA Camshaft Position Sensor 'A' No Signal
P0340 HYUNDAI Camshaft Position Sensor 'A' Circuit Malfunction Bank 1 Or Single Sensor
P0340 INFINITI Camshaft Position Sensor Circuit Bank 1
P0340 ISUZU Camshaft Position Sensor Circuit
P0340 JAGUAR Camshaft Position Sensor Circuit Bank 1 Sensor 1
P0340 JEEP Camshaft Position Sensor Circuit Bank 1 Sensor 1
P0340 KIA Camshaft Position Sensor Circuit Malfunction
P0340 LEXUS Camshaft Position Sensor 'A' Circuit Bank 1
P0340 LINCOLN Camshaft Position Sensor Circuit Bank 1 Sensor 1
P0340 MAZDA Camshaft Position Sensor Circuit Malfunction
P0340 MERCEDES-BENZ Camshaft Position Sensor 'A' Circuit Malfunction
P0340 MERCURY Camshaft Position Sensor Circuit Bank 1 Sensor 1
P0340 MINI Camshaft Sensor Inlet Signal
P0340 MITSUBISHI Camshaft Position Sensor Circuit
P0340 NISSAN Camshaft Position Sensor Circuit Bank 1
P0340 PONTIAC Camshaft Position Sensor 'A' Circuit Malfunction
P0340 SAAB Camshaft Position Sensor 'A' Circuit Malfunction
P0340 SATURN Camshaft Position Sensor 'A' Circuit Malfunction
P0340 SCION Camshaft Position Sensor 'A' Circuit Bank 1
P0340 SUBARU Camshaft Position Sensor 'A' Circuit Signal Fault Bank 1 Or Single Sensor
P0340 TOYOTA Camshaft Position Sensor 'A' Circuit Bank 1
P0340 VOLKSWAGEN Camshaft Position Sensor

Need more help?

Do you need more help with the P0340 code? Ask a question to our users or find an automotive repair shop near you to help fix the OBDII code

P0340 Comments

Help us improve itimaster.ru. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the P0340 code? Have you replaced any parts?
Any information is appreciated. Thanks
Repair Importance Level: 3
1=Low 2=Medium 3=High
Repair Difficulty Level: 2
1=Easy 2=Moderate 3=Hard

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