Advanced Diagnostics

DTC P15BE Advanced Diagnostics

DTC P15BE:

CMP Sensor Signal Malfunction





General Description

The engine mount control system controls the engine mounts electronically. The system consists of the engine mount actuators, the engine mount control unit, and the powertrain control module (PCM). The engine mount control unit uses the crankshaft position (CKP) sensor and camshaft position (CMP) sensor outputs (received from the PCM) to estimate engine vibration. The engine mount control unit then sends signals to the engine mount actuators to command the engine mounts to push and pull on the engine to counteract the engine vibration. The engine mount control unit monitors the CMP signal input from the PCM. If the CMP signal is not input to the engine mount control unit for a set time, the engine mount control unit detects a malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type, OBD Status





Enable Conditions





Malfunction Threshold

The CMP signal is not input to the engine mount control unit for at least 20 seconds.

Driving Pattern

Start the engine, and let it idle for at least 20 seconds.

Diagnosis Details

Conditions for setting the DTC

When a malfunction is detected, a Pending DTC, a Confirmed DTC, and the freeze data are stored in the PCM memory. The MIL does not come on.

Conditions for clearing the DTC

The Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the battery.