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

WARNING: This page is about a different variant/trim than selected.

DTC DETECTING CONDITION:

Detect as soon as malfunction occurs.
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, conduct Clear Memory Mode < Ref. to , OPERATION , Clear Memory Mode.> and Inspection Mode < Ref. to , PROCEDURE , Inspection Mode.>.

WIRING DIAGRAM:

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

Courtesy of SUBARU OF AMERICA, INC.

DTC P0340 CAMSHAFT POSITION SENSOR "A" CIRCUIT (BANK 1 OR SINGLE SENSOR) DIAGNOSIS

Step	Check	Yes	No
1. CHECK HARNESS BETWEEN CAMSHAFT POSITION SENSOR AND ECM CONNECTOR. Turn the ignition switch to OFF. Disconnect the connector from camshaft position sensor. Measure the resistance of harness between camshaft position sensor connector and engine ground. Connector & terminal (E15) No. 1 - Engine ground:	Is the resistance more than 100 kΩ?	Repair harness and connector. NOTE: In this case, repair the following: Open circuit in harness between camshaft position sensor and ECM connector Poor contact in ECM connector Poor contact in coupling connector	Go to step 2.
2. CHECK HARNESS BETWEEN CAMSHAFT POSITION SENSOR AND ECM CONNECTOR. Measure the resistance of harness between camshaft position sensor connector and engine ground. Connector & terminal (E15) No. 1 - Engine ground:	Is the resistance less than 10 Ω?	Repair ground short circuit in harness between camshaft position sensor and ECM connector. NOTE: The harness between both connectors are shielded. Repair ground short circuit in harness together with shield.	Go to step 3.
3. CHECK HARNESS BETWEEN CAMSHAFT POSITION SENSOR AND ECM CONNECTOR. Measure the resistance of harness between camshaft position sensor connector and engine ground. Connector & terminal (E15) No. 2 - Engine ground:	Is the resistance less than 5 Ω?	Go to step 4.	Repair harness and connector. NOTE: In this case, repair the following: Open circuit in harness between camshaft position sensor and ECM connector Poor contact in ECM connector Poor contact in coupling connector
4. CHECK CONDITION OF CAMSHAFT POSITION SENSOR.	Is the camshaft position sensor installation bolt tightened securely?	Go to step 5.	Tighten camshaft position sensor installation bolt securely.
5. CHECK CAMSHAFT POSITION SENSOR. Remove the camshaft position sensor. Measure the resistance between connector terminals of camshaft position sensor. Terminals No. 1 - No. 2:	Is the resistance 1 - 4 kΩ?	Repair poor contact in camshaft position sensor connector.	Replace the camshaft position sensor.< Ref. to CAMSHAFT POSITION SENSOR . >