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Home >> Mercury >> 2009 >> Mariner Base, 2.5 7, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Engine Controls - Powertrain DTC Charts & Descriptions - (Hybrid)) >> Diagnostic Trouble Code (DTC) Charts and Descriptions >> DTC P0340: Camshaft Position Sensor A Circuit (Bank 1 Or Single Sensor)

DTC P0340: Camshaft Position Sensor A Circuit (Bank 1 Or Single Sensor)

WARNING: This page is about a different variant/trim than selected.
P0340 - CAMSHAFT POSITION SENSOR A CIRCUIT (BANK 1 OR SINGLE SENSOR)

Description:  The test fails when the powertrain control module (PCM) can no longer detect the signal from the camshaft position (CMP) sensor.
Possible Causes: 
  • CMP circuit open
  • CMP circuit short to GND
  • CMP circuit short to voltage
  • SIGRTN circuit open
  • VBPWR circuit open
  • Damaged CMP sensor shielding
  • Damaged CMP sensor
Diagnostic Aids:  Harness routing, harness alterations, damaged shielding, or electrical interference from other incorrectly functioning systems may have an intermittent impact on the CMP signal.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All - GO to PINPOINT TEST DR . GO to PINPOINT TEST DR .