P2610

ECM/PCM Internal Engine Off Timer Performance

Car Fault Codes Engine computer & electrical

Can you still drive? Yes, normally

Who can fix it? Needs a workshop

Typical repair time 30 minutes – 4 hours

Typical cost SAR 100 to 5,000

What it means

The engine computer has an internal timer that counts how long the engine has been off, used for tests such as the EVAP leak test and comparing temperature sensors on a cold start. The computer found that this timer reading does not match what was expected, for example when compared with how much the engine cooled while off.

Symptoms4

Check engine light on, often with no other symptoms.
Some self-tests, such as the EVAP test, do not complete.
Failed emissions test because monitors are not ready.
Usually no noticeable change in engine performance.

Possible causes5

Weak battery or loss of constant power to the computer, such as a disconnected battery or blown fuse.
Poor battery terminals or computer ground points.
Outdated computer software that the manufacturer fixes with an update.
Incorrect coolant temperature sensor reading used by the computer for comparison.
Internal engine computer fault.

How to diagnose5

Ask whether the battery was recently disconnected or replaced, as the code can appear once after that.
Test the battery and charging system, and make sure the terminals are clean and tight.
Check the computer's constant-power fuse and ground points.
Look for technical service bulletins and software updates for your vehicle.
Clear the code and watch for its return over several long engine-off periods before condemning the computer.

How to fix5

Clean and tighten the battery terminals, and replace the battery if it is weak.
Repair the fuse, constant-power wire or damaged ground point.
Update the engine computer software if the manufacturer has released an update for this code.
Replace and program the engine computer if it is proven faulty.
Clear the codes and confirm the self-tests complete and the code does not return.

Repair cost

0–500

500–2,000

2,000–5,000

5,000+

In Saudi riyals; the highlighted part is the expected range for this fault.

The cost is low for a battery terminal or ground fault, moderate for a software update, and reaches the upper end if the engine computer must be replaced and programmed.

Prices are rough estimates for common cars at independent workshops and vary with the car and the source of the part.
Prices last updated: September 2026

Frequently asked questions

Does the engine computer need replacing?

Not at first. The cause is often a power or battery problem, or software that needs an update. Replacing the computer is the last option.

Why did the code appear after a battery change?

Losing power resets the timer, so its reading no longer matches the engine's condition. If the code does not return after clearing, there is no need to worry.

This guide is for information only and does not replace an inspection by a qualified technician. If the fault involves brakes, steering, engine temperature, electrics or refrigerant, do not attempt the repair yourself.

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