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

WARNING: This page is about a different car, the 2006 Subaru Outback. However, it is still accessible from the selected car via links, so may be relevant.

DTC DETECTING CONDITION:

Immediately at fault recognition
GENERAL DESCRIPTION < Ref. to DTC P0340 CAMSHAFT POSITION SENSOR "A" CIRCUIT (BANK 1 OR SINGLE SENSOR) , Diagnostic Trouble Code (DTC) Detecting Criteria. >

TROUBLE SYMPTOM:

Engine stalls.
Failure of engine to start

CAUTION: After repair or replacement of faulty parts, perform Clear Memory Mode < Ref. to OPERATION , Clear Memory Mode. > and Inspection Mode < Ref. to PROCEDURE , Inspection Mode. >.

WIRING DIAGRAM:

Fig 1: Camshaft Position Sensor - Wiring Diagram

DTC P0340 CAMSHAFT POSITION SENSOR "A" CIRCUIT (BANK 1 OR SINGLE SENSOR) - DIAGNOSTIC PROCEDURE

Step	Check	Yes	No
1 CHECK FOR ANY OTHER DTC ON DISPLAY.	Is any other DTC displayed?	Check the appropriate DTC using the "List of Diagnostic Trouble Code (DTC)". < Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . >	Go to step 2.
2 CHECK POWER SUPPLY OF CAMSHAFT POSITION SENSOR. Turn the ignition switch to OFF. Disconnect the connector from camshaft position sensor. Measure the voltage between camshaft position sensor connector and engine ground. Connector & terminal (E73) No. 1 (+) - Engine ground (-):	Is the voltage more than 10 V?	Repair the battery short circuit between main relay connector and camshaft position sensor connector.	Go to step 3.
3 CHECK POWER SUPPLY OF CAMSHAFT POSITION SENSOR. Turn the ignition switch to ON. Measure the voltage between camshaft position sensor connector and engine ground. Connector & terminal (E73) No. 1 (+) - Engine ground (-):	Is the voltage more than 10 V?	Go to step 4.	Repair the open or ground short circuit between main relay connector and camshaft position sensor connector.
4 CHECK HARNESS BETWEEN CAMSHAFT POSITION SENSOR CONNECTOR AND ECM. Turn the ignition switch to OFF. Disconnect the connector from ECM. Measure the resistance between camshaft position sensor connector and ECM. Connector & terminal (E73) No. 2 - (B134) No. 11: (E73) No. 3 - (B134) No. 22:	Is the resistance less than 1 Ω?	Go to step 5.	Repair the open circuit between camshaft position sensor and ECM.
5 CHECK HARNESS BETWEEN CAMSHAFT POSITION SENSOR CONNECTOR AND ECM. Measure the resistance between camshaft position sensor connector and engine ground. Connector & terminal (E73) No. 2 - Engine ground:	Is the resistance more than 1 MΩ?	Go to step 6.	Repair the ground short circuit between camshaft position sensor and ECM.
6 CHECK CONDITION OF CAMSHAFT POSITION SENSOR.	Is the camshaft position sensor installation bolt tightened securely?	Go to step 7.	Tighten the camshaft position sensor installation bolt securely.
7 CHECK CAMSHAFT POSITION SENSOR. Check waveform of camshaft position sensor. < Ref. to ENGINE CONTROL MODULE (ECM) I/O SIGNAL . >	Is there any abnormality in waveform?	Replace the camshaft position sensor. < Ref. to CAMSHAFT POSITION SENSOR . >	Go to step 8.
8 CHECK POOR CONTACT. Check the poor contact of ECM connector.	Is there poor contact in ECM connector?	Repair the poor contact of ECM connector.	Replace the ECM. < Ref. to ENGINE CONTROL MODULE (ECM) . >