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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Engine Control System - 3.5L) >> DTC P2127, P2128: App Sensor >> On Board Diagnosis Logic >> Fail-Safe Mode

Fail-Safe Mode

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

FAIL-SAFE MODE SPECIFICATION

Engine operating condition in fail-safe mode
The ECM controls the electric throttle control actuator in regulating the throttle opening in order for the idle position to be within +10 degrees.
The ECM regulates an opening speed of the throttle valve to be slower than the normal condition. So, the acceleration will be poor.
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