P1175 – Fuel Trim Lean (Bank 2, Nissan)

Description

The ECM detected an excessively lean fuel mixture on Bank 2.

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Symptoms

Hesitation
Poor acceleration
Rough idle
High fuel consumption
Check engine light

Causes

Vacuum leak
Low fuel pressure
Faulty O2 sensor
MAF sensor fault
Injector clogging

Diagnosis

Check fuel trims
Inspect vacuum lines
Test fuel pressure
Scan live data

Repair

Repair vacuum leaks
Replace O2 sensor
Fix fuel pressure issue
Clean injectors