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 measured duration is used for evaporative emission (EVAP) leak check and temperature assumption of the catalytic converter. The CPU in the 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 PCM detects a malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type
Execution
Continuous
Sequence
None
Duration
10 seconds or more
DTC Type
Two drive cycles, MIL on
OBD Status
PASSED/FAILED/NOT COMPLETED (STILL TESTING)

Enable Conditions
Condition
 
Vehicle*
ON mode
*: Excludes after the 12 volt battery is reconnected.

Malfunction Threshold
The access process to the ignition off timer fails, or a malfunction is found in the read data for at least 10 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 Confirmed DTC and the freeze data 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, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the 12 volt battery.