Advanced Diagnostics

DTC P15C0 Advanced Diagnostics

DTC P15C0:

CKP Sensor Signal Intermittent Interruption





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 CKP signal input from the PCM, and when an abnormal condition continues 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

One of these conditions must be met at least 127 times.

- The number of CKP pulses is not 58 during intervals between reference pulses for each crank revolution.
- No interval is detected while CKP sensor pulse inputs 82.

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.