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Home >> Nissan-Datsun >> 2002 >> Sentra SE-R, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 515 (Engine Control System - Sedan) >> DTC P2122, P2123: App Sensor >> On Board Diagnosis Logic >> Fail-Safe Mode
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Fail-Safe Mode

WARNING: This page is about a different car, the 2005 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up.

Engine operating condition in fail-safe mode

ECM controls the electric throttle control actuator in regulating the throttle opening in order for the idle position to be within +10 degrees.

ECM regulates the opening speed of the throttle valve to be slower than the normal condition. So, the acceleration will be poor.

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