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Home >> Nissan-Datsun >> 2008 >> Sentra SL >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Control System - DTCS P1148 To P2A03 (Qr25DE)) >> DTC P1805 Brake Switch >> On Board Diagnosis Logic >> Fail-Safe Mode

Fail-Safe Mode

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When the malfunction is detected, the ECM enters in fail-safe mode.

FAIL-SAFE MODE CHART

Engine operation condition in fail-fail safe mode
ECM controls the electric throttle control actuator by regulating the throttle opening to a small range. Therefore, acceleration will be poor.
Vehicle condition Driving condition
Engine: Idling Normal
Accelerating Poor acceleration