DTC P0341, P0342, P0343, P0346, P0347, P0348, P0366, P0367, P0368, P0391, P0392, or P0393 (LAU)
/ 9-5 (9650) / 2011 / 2. Engine / Engine management and fuel system, V6 / Fault diagnosis, diagnostic trouble codes / DTC P0341, P0342, P0343, P0346, P0347, P0348, P0366, P0367, P0368, P0391, P0392, or P0393 (LAU)
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DTC P0341, P0342, P0343, P0346, P0347, P0348, P0366, P0367, P0368, P0391, P0392, or P0393 (LAU)
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DTC P0341
Intake Camshaft Position Sensor Performance Bank 1
DTC P0342
Intake Camshaft Position Sensor Circuit Low Voltage Bank 1
DTC P0343
Intake Camshaft Position Sensor Circuit High Voltage Bank 1
DTC P0346
Intake Camshaft Position Sensor Performance Bank 2
DTC P0347
Intake Camshaft Position Sensor Circuit Low Voltage Bank 2
DTC P0348
Intake Camshaft Position Sensor Circuit High Voltage Bank 2
DTC P0366
Exhaust Camshaft Position Sensor Performance Bank 1
DTC P0367
Exhaust Camshaft Position Sensor Circuit Low Voltage Bank 1
DTC P0368
Exhaust Camshaft Position Sensor Circuit High Voltage Bank 1
DTC P0391
Exhaust Camshaft Position Sensor Performance Bank 2
DTC P0392
Exhaust Camshaft Position Sensor Circuit Low Voltage Bank 2
DTC P0393
Exhaust Camshaft Position Sensor Circuit High Voltage Bank 2
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Diagnostic Fault Information
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Circuit
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Short to Ground
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Open/High Resistance
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Short to Voltage
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Signal Performance
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Camshaft Position Sensor 5-Volt Reference
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P0343, P0348, P0368, P0393, P0652, P2122, P2138
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P0343, P0348, P0368, P0393, P0651
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P0653, P2123, P2138
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P0341, P0346, P0366, P0391, P0651, P0652, P0653, P2138
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Camshaft Position Sensor Signal Intake Bank 1
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P0342
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P0343
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P0343
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P0341
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Camshaft Position Sensor Signal Intake Bank 2
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P0347
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P0348
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P0348
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P0346
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Camshaft Position Sensor Signal Exhaust Bank 1
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P0367
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P0368
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P0368
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P0366
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Camshaft Position Sensor Signal Exhaust Bank 2
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P0392
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P0393
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P0393
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P0391
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Low Reference
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-
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P0343, P0348, P0368, P0393
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-
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P0341, P0346, P0366, P0391
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Circuit/System Description
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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 wheel is installed on the camshaft position actuators which in turn are installed on the ends of the camshafts. The ECM uses the camshaft position sensor signals to determine the positions of the camshafts.
The ECM uses the cylinder 1 intake camshaft position sensor to determine injector and ignition system synchronization. Also, the cylinder 1 intake camshaft position sensor is used to determine camshaft to crankshaft relationship.
The ECM supplies 5 volts to the camshaft position sensors on the 5-volt 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. If the ECM detects extra or missing camshaft position sensor signal transitions, or a signal voltage that is more or less than the predetermined range, within a certain number of crankshaft revolutions, one of these DTCs sets.
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Conditions for Running the DTC
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The ECM detects greater than 10 crankshaft revolutions.
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The engine speed is less than 2,520 RPM.
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The DTCs runs continuously when the above condition are met.
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Conditions for Setting the DTC
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P0341, P0346, P0366, P0391
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The ECM detects a signal from the camshaft position sensor, but the number of pulses are less than or greater than what is expected for one crankshaft revolution.
OR
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The camshaft position sensor does NOT correlate to the crankshaft position.
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Either condition exists for greater than 1 second or a cumulative of 10 seconds.
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P0342, P0347, P0367, P0392
The camshaft position sensor signal voltage is always low and the ECM detects no pulses from the camshaft position sensor for greater than 1 second, or cumulative of 10 seconds.
P0343, P0348, P0368, P0393
The camshaft position sensor signal voltage is always high and the ECM detects no pulses from the camshaft position sensor for greater than 1 second or cumulative of 10 seconds.
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Action Taken When the DTC Sets
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DTCs P0341, P0342, P0343, P0346, P0347, P0348, P0366, P0367, P0368, P0391, P0392, and P0393 are Type B DTCs.
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Conditions for Clearing the DTC
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DTCs P0341, P0342, P0343, P0346, P0347, P0348, P0366, P0367, P0368, P0391, P0392, and P0393 are Type B DTCs.
The following conditions can also set the DTC:
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Physical damage to the camshaft position sensor or the reluctor wheel
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Excessive play or looseness of the camshaft position sensor or the reluctor wheel
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Improper installation of the camshaft position sensor or the reluctor wheel
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Foreign material passing between the camshaft position sensor and the reluctor wheel
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Excessive air gap between the camshaft position sensor and the reluctor wheel
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The cylinder 1 intake camshaft position sensor is used for injector and ignition system synchronization. A stalling condition will occur if the CMP sensor signal is intermittent and a DTC will not set. Inspect all cylinder 1 intake camshaft position sensor circuits for poor connections.
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Schematic Reference
Engine Controls Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Camshaft Actuator System Description
Electrical Information Reference
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References
for scan tool information
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Circuit/System Verification
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1.
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Ignition ON, check the diagnostic trouble code (DTC) information with a scan tool. DTCs P0651, P0652 or P0653 should not set.
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3.
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Allow the engine to idle and check the DTC information with a diagnostic tool. Diagnostic trouble codes P0341, P0342, P0343, P0346, P0347, P0348, P0366, P0367, P0368, P0391, P0392 or P0393 must not be activated.
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4.
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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.
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1.
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Ignition OFF, remove the fuse that supplies B+ to terminal 56-X2 of the ECM.
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2.
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Disconnect the harness connector at the appropriate camshaft position sensor.
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3.
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Note
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The control module or the sensor may be damaged if the circuit is shorted to B+ voltage.
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Test for 5 Ω or less between the low reference circuit terminal 1 and ground.
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4.
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If greater than the specified range, test the low reference circuit for an open/high resistance, or for a short to voltage. If circuit/connections test normal, replace the ECM.
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5.
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Install the fuse that supplies B+ to terminal 56-X2 of the ECM.
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6.
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Ignition ON, test for greater than 4.8 V between the 5-volt reference circuit terminal 3 and ground.
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7.
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If less than the specified value, test the 5-volt reference circuit for an open/high resistance. If the circuits/connections test normal, replace the ECM.
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8.
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Test for 4.8-5.2 V between the signal circuit terminal 2 and ground.
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9.
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If the voltage is greater than specified range, test for a short to voltage in the signal circuit. If circuit/connections test normal, replace the ECM.
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10.
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If the voltage is less than the specified range, test for a short to ground or an open/high resistance in the signal circuit. If circuit/connections test normal, replace the ECM.
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11.
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If all circuits/connections test normal, replace the camshaft position sensor.
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Perform the
Diagnostic Repair Verification
after completing the diagnostic procedure.
