DTC Advanced Diagnostics: P2610
DTC P2610:Powertrain Control Module (PCM) Ignition Off Internal Timer Malfunction

General Description
The powertrain control module (PCM) has a built-in ignition off timer that measures the duration from ignition off to the next ignition on. The ignition off time is determined by the stop counter, and the check is done by comparing it with the system timer while the vehicle is in OFF (LOCK) mode. If the time monitored by the stop counter deviates from the time monitored by the system timer, the PCM detects a malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type
Execution
Once per driving cycle
Sequence
None
Duration
8 seconds or more
DTC Type
Two drive cycles, MIL on

Enable Conditions
Condition
 
Vehicle
OFF (LOCK) mode

Malfunction Threshold
The stop counter time is less than 94 % or more than 106 % of the system timer which the diagnosis time is set to 8 seconds.

Possible Cause
NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
PCM internal circuit failure

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 Pending DTC, a Confirmed DTC, and the freeze data are stored in the PCM memory.

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, and the freeze data can be cleared with the scan tool Clear command.