Sfi System Fail-Safe Chart

Sfi System -- Fail-Safe Chart


If any of the following codes are recorded, the ECM enters fail-safe mode.

DTC No.
Item
Fail-safe Operation
Fail-safe Deactivation Condition
P0100/31
P0102/31
P0103/31
Mass Air Flow Meter
If engine is running at over 3,000 rpm, ECM performs fuel cut.
"Pass" condition detected
P0110/24
P0112/24
P0113/24
Intake Air Temperature Sensor
ECM fixes intake air temperature at 20°C (68°F).
"Pass" condition detected
P0115/22
P0117/22
P0118/22
Engine Coolant Temperature
Sensor
ECM fixes engine coolant temperature at 80°C (176°F).
"Pass" condition detected
P0120/41
P0122/41
P0123/41
P0220/41
P0222/41
P0223/41
P2102/41
P2103/41
P2111/41
P2112/41
P2118/89
P2119/89
P2135/41
Electronic Throttle Control System
If electronic throttle control system is malfunctioning, ECM cuts off current to throttle actuator. Throttle control valve returns to predetermined throttle position (approximately 6.5°) by force of return spring.
Then, required engine power is calculated by using ignition timing and accelerator pedal position. Engine is controlled by intermittent fuel-cut. If accelerator pedal is depressed firmly and slowly, vehicle can be driven at minimum speed. If accelerator pedal is depressed quickly, vehicle may speed up and slow down erratically.
"Pass" condition detected and then ignition switch turned OFF
P0325/52
P0327/52
P0328/52
Knock Sensor
ECM sets ignition timing delay to maximum.
Ignition switch turned OFF
P0351/14
P0352/15
P0353/14
P0354/15
Igniter
If engine is running at over 500 rpm, ECM performs fuel cut in malfunctioning cylinders.
Engine performs fuel cut in all cylinders if: 1) engine is running at over 1,500 rpm, and 2) engine load rate is 20 to 89% or more.
"Pass" condition detected
P0504/51
Stop Light Switch
Accelerator pedal angle is fixed.
"Pass" condition detected
P2120/19
P2121/19
P2122/19
P2123/19
P2125/19
P2127/19
P2128/19
P2138/19
Accelerator Pedal Position Sensor
Engine is stuck on idle or output is limited.
"Pass" condition detected and then ignition switch turned OFF