Volt

DTC P0340 or P0365

Each camshaft is equipped with a camshaft position sensor that the engine control module (ECM) monitors. The camshaft position sensor is a hall effect switch that works in conjunction with a 4X reluctor wheel. The reluctor wheels are mounted to the camshaft position actuators that are mounted to the end of the camshafts. The ECM uses the camshaft position sensor signals in order to determine the position of the camshafts. The ECM supplies 5 V to the camshaft position sensors on the 5 V reference circuits and supplies a ground on the low reference circuits. The camshaft position sensors provide a signal to the ECM on the signal circuits.

P0340 Condition 1

Condition 2

Condition 3

Condition 4

P0365 Condition 1

Condition 2

Condition 3

Condition 4

The DTCs run continuously once the above conditions are met.

Condition 1

Condition 2

Fewer than 4 camshaft pulses have been received in greater than 3 s.

Condition 3

No camshaft sensor pulses have been received during the first engine cycle.

Condition 4

The number of camshaft pulses received during 100 engine cycles equals 0.

DTCs P0340, and P0365 are Type B DTCs.

Schematic Reference

Engine Controls Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Hybrid Modes of Operation Description

Electrical Information Reference

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

1. Vehicle in Service Mode, observe the DTC information with a scan tool. DTC P0641 should not be set.

⇒	If DTC P0641 is set, refer to DTC P0641, P0651, P0697, or P06A3 : ECM .

2. Engine running, observe the scan tool Inlet or Exhaust Camshaft Position Active Counter parameters. The parameters should be incrementing.
3. Observe the DTC information with a scan tool. DTC P0340 or P0365 should not set.
4. Operate the vehicle within the conditions for running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the freeze frame/failure records data.

1. Vehicle OFF. Disconnect the harness connector at the appropriate B23 camshaft position sensor.
2. Vehicle OFF, all systems OFF. It may take 2 minutes for all Vehicle systems to power down. Test for less than 5 Ω between the low reference circuit terminal 2 and ground.

⇒	If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K20 ECM.

3. Vehicle in Service Mode, test for 4.8-5.2 V between the 5 V reference circuit terminal 1 and ground.

⇒	If less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20 ECM.

⇒	If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.

4. Test for 4.8-5.2 V between the signal circuit terminal 3 and ground.

⇒	If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20 ECM.

⇒	If greater than the specified range, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K20 ECM.

5. If all circuits test normal, test or replace the B23 Camshaft Position Sensor.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.