Fault code P2610 – ECM/PCM internal engine off timer performance

Fault code P2610 is called “ECM/PCM Internal Engine Off Timer Performance” but in different programs it may be called differently. This fault designation applies to all vehicles equipped with OBD-II.

Technical description and explained code P2610

OBD-II fault code P2610 is a generic code defined as “malfunction of internal engine shutdown timer in control module (ECM/PCM)”. It is set when the control module cannot determine if the engine has been turned off or how long the engine has been off.

Fault code P2610 – ECM/PCM internal engine off timer performance

The control module uses input signals from engine sensors to determine if the engine is running. These signal indicators include the crankshaft position sensor, fuel pressure, and primary ignition voltage.

If the ECM/PCM cannot detect a signal from one of these indicators, indicating that the engine has been shut down. No command is sent to the internal timer and it also cannot recognize if the engine has been shut down.

The ECM/PCM internal engine shutdown timer is critical for monitoring ignition cycles. Which helps to calculate fuel delivery and ignition timing, as well as gear shift patterns.

If the ECM / PCM cannot declare engine shutdown and start timing control between ignition cycles. Then code P2610 will be stored and the malfunction indicator lamp may illuminate.

Normally it takes several ignition cycles with failure to activate the fault indicator lamp.

Symptoms of vehicle malfunctions

The main signal that an error P2610 has occurred is the Malfunction Indicator Lamp (MIL) is also known as the CheckEngine Light.

It can also be warning signs such as:

  1. The “Check engine” control lamp on the control panel will light up (the code will be written in the memory as a malfunction).
  2. In most cases there will probably be no obvious symptoms.
  3. In some cases, fuel consumption may increase.
  4. Over time, symptoms of poor engine controllability may occur.
  5. Reduced engine performance.
  6. The vehicle may fail the emissions test because the EVAP system self-test will not be able to start.

Diagnostic fault code P2610 is not considered serious, but it is better to fix it sooner. Because many factors depend on the performance of the ECM / PCM internal engine shutdown timer.

Factors that can cause this error code

The error code P2610 can mean that one or more of the following problems have occurred:

  • Faulty ECM / PCM module.
  • ECM / PCM software failure.
  • Damaged, corroded wiring or connectors.
  • Damaged PCM ground circuit or faulty data output device.
  • Open or short circuit in CAN circuit.
  • Faulty crankshaft position sensor (CPS) or short in wiring.

How to fix or reset OBD-2 code P2610

Some suggested steps for troubleshooting and fix the error code P2610:

  1. Inspect the wiring for damage, abrasions, breaks, and shorts. If the wiring is damaged, repair or replace it.
  2. Disconnect and test each CAN bus pin with a special diagnostic scan tool.
  3. Check the crankshaft position sensor (CPS).
  4. If the problem persists, the PCM may need to be replaced and reprogrammed.

Diagnose and repair of problems

Diagnosing a P2610 code can be a daunting task even for the most experienced and well-equipped technician. Nevertheless, there are a few preliminary tests that can be performed before calling for service to replace the PCM.

Start with a visual inspection of all visible wires and harnesses associated with the vehicle’s controllers. Using a multimeter, check the ground to the engine and bodywork to make sure they are OK.

Since the internal engine shutdown timer uses data from the crankshaft position (CPS) and fuel pressure sensors. These, too, are worth checking to make sure they’re working properly.

Connecting the battery

To rule out all variants of error P2610, you should visually inspect the wiring, check the voltage on the battery. You should also check the battery terminals and cables for loose connections.

Ensure that the system voltage is as specified in the manual. The charging system is fully operational and the battery is in good condition, begin the diagnostic procedure.

Further verification

Locate the ECM / PCM and inspect it for damage caused by water, heat or collision. If the PCM is damaged, especially by water, it is likely out of service and needs to be replaced.

Next, check the fuses and relays on the ECM / PCM power supply. Inspect and replace the blown fuses as well as the relay connector.

If the ECM / PCM power supply code is also present along with error P2610, correct it first before troubleshooting this fault.

After performing the tests, recheck the error; if the error is still present, the ECM / PCM module is most likely defective. Replacing the ECM / PCM or any other controller usually requires reprogramming for the specific vehicle.

On which vehicles does this problem occur most frequently

Fault code P2610 can occur on different vehicles but there are statistics on which brands this occurs most often. Here is a list of some of them:

  • BMW
  • Chevrolet (Aveo, Cruze, Lacetti, Lanos, Silverado)
  • Chrysler
  • Daewoo (Gentra, Nexia)
  • Dodge
  • Ford (Focus)
  • GMC
  • Honda (Accord)
  • Hyundai (Santa Fe)
  • Kia (Cerato, Optima)
  • Land Rover
  • Lexus
  • Mazda (3, 5, 6, CX-5, Miata)
  • Mercedes-Benz (Sprinter)
  • Nissan (Rogue)
  • Opel (Astra)
  • Ravon (R3)
  • Subaru
  • Toyota (Camry, Corolla)

Fault code P2610 can sometimes be found with other errors. The most common are the following: P0606, P0607, P0613, P0614.


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