Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2015 Kia Optima LimitedFACTORY OEM SERVICE PROCEDURE

General Information: DTC Detecting Condition

DTC DETECTING CONDITION CHART

Item	Detecting Condition	Possible Cause
DTC Strategy	Signal Monitoring	Poor connection Open or short in charging system Faulty charging system Faulty PCM
Enable Conditions	Engine running state No LIN Bus error / No Plausibility Error related to smart sensor / No Alternator Error
Threshold value	Battery charging current < Calibration State of Charge (SOC) < Calibration
Diagnosis Time	Continuous
MIL On Condition	NO MIL ON (DTC only)

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.

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