34. Detect Malfunctioning Part

WARNING: This page is about a different car, the 2004 Infiniti Q45. However, it is still accessible from the selected car via links, so may be relevant.

Check the following.

Check fuel pressure regulator and repair or replace if necessary. Refer to FUEL PRESSURE CHECK .
Check mass air flow sensor and its circuit, and repair or replace if necessary. Refer to DTC P0102, P0103 MAF SENSOR .
Check injector and its circuit, and repair or replace if necessary. Refer to INJECTOR CIRCUIT .
Check engine coolant temperature sensor and its circuit, and repair or replace if necessary. Refer to DTC P0117, P0118 ECT SENSOR and DTC P0125 ECT SENSOR .

OK or NG

OK : GO TO 36. CHECK ECM FUNCTION .

NG :

Repair or replace.
GO TO 35.