SFI SYSTEM FAIL-SAFE CHART

If any of the following DTCs are stored, the ECM enters fail-safe mode to allow the vehicle to be driven temporarily or stops fuel injection.

DTC No.

Component

Fail-Safe Operation

Fail-Safe Deactivation Condition

P0112

P0113

Intake air temperature sensor

ECM estimates intake air temperature to be 20°C (68°F)

Pass condition detected

P0116

P0117

P0118

Engine coolant temperature sensor

ECM performs engine control using estimated engine coolant temperature calculated from intake air temperature at time of engine start and intake air volume

Pass condition detected

P0121

P0122

P0123

P0221

P0222

P0223

Throttle Position sensor

ECM limits its accelerator pedal position sensor value to below 40%

Pass condition detected and ignition switch off

P0301

P0302

P0303

Misfire detected

If misfire rate of cylinder exceeds catalytic damage misfire rate, fuel supply to that cylinder is suspended

Pass condition detected and ignition switch off

P0327

P0328

Knock control sensor

ECM sets ignition timing to maximum retard

Pass condition detected

P0335

P0336

Crank position sensor

  • Maximum engine speed limited to 3000 rpm

  • Idle speed raised to 1000 rpm

Pass condition detected

P0400

P0403

EGR valve assembly

ECM assumes that EGR valve is closed, so that ignition angle is controlled with safety valve

Pass condition detected

"P0121, P0122 or P0123" and "P0221, P0222 or P0223"

P0606

P060A*1

P0657

P2101

P2102

P2103

P2109

P2111

P2118

P2119

Throttle control system

Power source of throttle control motor shuts down, and engine speed is limited by fuel cut.

However, if DTC P2111 (Throttle Actuator Control System - Stuck Open) is stored, engine speed will be limited to 0 rpm and engine will stop.

Pass condition detected and ignition switch off

P060A*2

P2122

P2123

P2127

P2128

P2138

Accelerator pedal position sensor

ECM limits its accelerator pedal position sensor value below 40%

Pass condition detected and ignition switch off

P060D

"P2122 or P2123" and "P2128 or P2127"

Accelerator pedal position sensor

Drive with "fast idle" condition

Pass condition detected and ignition switch off
Tip:

  • *1: When the throttle monitoring CPU of the ECM is malfunctioning.

  • *2: When the accelerator pedal position monitoring CPU of the ECM is malfunctioning.