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.

2012 Nissan-Datsun Altima SLFACTORY OEM SERVICE PROCEDURE

SRT Item

The table below shows required self-diagnostic items to set the SRT to "CMPLT".

SRT item⁽¹⁾ (CONSULT indication)

Performance Priority⁽²⁾

Required self-diagnostic items to set the SRT to "CMPLT"

Corresponding DTC No.

CATALYST

Three way catalyst function

P0420

HO2S

Air fuel ratio (A/F) sensor 1

P0133

Heated oxygen sensor 2

P0137

Heated oxygen sensor 2

P0138

Heated oxygen sensor 2

P0139

⁽¹⁾ Though displayed on the CONSULT screen, "HO2S HTR" is not SRT item.

⁽²⁾	If completion of several SRTs is required, perform driving patterns (DTC confirmation procedure), one by one based on the priority for models with CONSULT.

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.