Code 25

DTC 25 - Air-Fuel Ratio Lean Malfunction

Purpose of the driving pattern:
* To simulate diagnosis code detecting condition after diagnosis code is recorded.
* To check that the malfunction is corrected when the repair is completed confirming that the diagnosis code is no longer detected.

DTC 25 - Air-Fuel Ratio Lean Malfunction:

1. Disconnect the fuse EFI (15 A) for 10 seconds or more, with IG switch OFF.
2. Start the engine and warm the engine up.
3. After the engine is warmed up, let it idle for 2 minutes.
4. After performing the idling in Step 3, perform sudden racing to 4,000 rpm three times.
5. After performing the sudden racing in step 4, perform racing at 2,000 rpm for 2 minutes.
6. After performing the racing in step 5, turn the IG switch OFF for 10 seconds.
7. Start the engine and perform steps 2, 3, 4, and 5 again.

HINT: If a malfunction is detected, the "CHECK" engine warning light will light up during step 7.

NOTICE: If this procedure is not strictly followed, you can not detect the malfunctions.