DTC P2610: Engine Control Module (ECM)/Powertrain Control Module (PCM) Ignition Off Internal Timer Malfunction: General Description

The engine control module (ECM)/powertrain control module (PCM) has a built-in ignition off timer that measures the duration from ignition off to the next ignition on. The measured duration is used for evaporative emission (EVAP) leak detection and temperature assumption of the catalytic converter. The CPU in the ECM/PCM accesses the ignition off timer when reading the measured duration. If the access process fails, a malfunction is detected and a DTC is stored. When an abnormality is found in the read data, the ECM/PCM detects a malfunction and stores a DTC.