DTC Advanced Diagnostics: P0366 (1.5L Engine)
DTC P0366: Camshaft Position (CMP) Sensor B and Crankshaft Position (CKP) Sensor Incorrect Phase Detected
General Description
Camshaft position (CMP) sensor B detects the exhaust camshaft timing and sends pulsing signals to the powertrain control module (PCM). The PCM determines the advance or the retard of the exhaust camshaft timing according to the signals from the crankshaft position (CKP) sensor and CMP sensor B. If the exhaust camshaft reference phase value deviates from a set range over a specified time period while the variable valve timing control (VTC) is not activated, the PCM detects a malfunction and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type
| Execution | Continuous |
| Sequence | None |
| Duration | 4.0 seconds or more |
| DTC Type | Two drive cycles, MIL on |
Enable Conditions
| Condition | Minimum | Maximum |
|---|---|---|
| Elapse time after starting the engine | 1.0 second | - |
| Engine speed [Engine Speed] | 500 rpm | - |
| Other | VTC system not operating | |
[ ]: HDS Parameter
Malfunction Threshold
The difference between exhaust camshaft phase measured from CMP sensor B and exhaust camshaft standard phase value according to the CKP sensor position is 10.0 deg. or more for at least 4.0 seconds.
Possible Cause
The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
- VTC actuator B stuck
- VTC actuator B phase deviation
- VTC oil control solenoid valve B stuck
- VTC actuator B failure (return spring cut)
- VTC system abnormal low oil pressure
Confirmation Procedure
Operating Condition
Start the engine, and let it idle. When the diagnosis does not finish, allow the engine cool to an engine coolant temperature [ECT Sensor 1] of ambient temperature, then restart the engine, and let it idle.
Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected during the first drive cycle, a Pending DTC is stored in the PCM memory. If the malfunction returns in the next (second) drive cycle, the MIL comes on and a Confirmed DTC, the freeze data, and the on-board snapshot are stored.
Conditions for clearing the DTC
The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, the freeze data, and the on-board snapshot can be cleared with the scan tool clear command.