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.
Engine Code
Engines are identified by a 3-letter code stamped on engine. On vehicles equipped with engine code APB or ATQ, engine code is on machined surface on cylinder block, at front right cylinder bank. The engine code is also indicated on the vehicle data sticker. See Fig 1 or Fig 2 . On vehicles equipped with engine code ART, letters are located on left side of cylinder block. The engine code is also included on vehicle data label. See Fig 3.
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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.